Where does “友愛数” come from?
友愛数 (Japanese) comes from Japanese 数, from Middle Chinese 數, from Old Chinese 數.
友愛数 (Japanese): amicable numbers, two different numbers related in such a way that the sum of the proper divisors of each is equal to the other number
Definitions
- amicable numbers, two different numbers related in such a way that the sum of the proper divisors of each is equal to the other number
Ancestry of “友愛数”, step by step
友愛数 traces back through two separate lines of ancestry.
via Japanese 数
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | Japanese | 数 | number; amount; number; several |
| 2 | Middle Chinese | 數 | — |
| 3 | Old Chinese | 數 | — |
via Japanese 友愛
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | Japanese | 友愛 | affection, friendship, brotherhood, fraternity, friendly love, fraternal love |