21031578

素因数分解:

$2^1\times 3^2\times {\mathrm{31}}^1\times {\mathrm{37691}}^1$

素因数の和:37730

約数の個数: 24

約数和(自身を含む): 47039616

約数和(自身を除く): 26008038

約数列:

[1, 2, 3, 6, 9, 18, 31, 62, 93, 186, 279, 558, 37691, 75382, 113073, 226146, 339219, 678438, 1168421, 2336842, 3505263, 7010526, 10515789, 21031578]

約数ペア:

[(1, 21031578), (2, 10515789), (3, 7010526), (6, 3505263), (9, 2336842), (18, 1168421), (31, 678438), (62, 339219), (93, 226146), (186, 113073), (279, 75382), (558, 37691)]