21811630

素因数分解:

$2^1\times 5^1\times {\mathrm{223}}^1\times {\mathrm{9781}}^1$

素因数の和:10011

約数の個数: 16

約数和(自身を含む): 39441024

約数和(自身を除く): 17629394

約数列:

[1, 2, 5, 10, 223, 446, 1115, 2230, 9781, 19562, 48905, 97810, 2181163, 4362326, 10905815, 21811630]

約数ペア:

[(1, 21811630), (2, 10905815), (5, 4362326), (10, 2181163), (223, 97810), (446, 48905), (1115, 19562), (2230, 9781)]