21105710

素因数分解:

$2^1\times 5^1\times {\mathrm{521}}^1\times {\mathrm{4051}}^1$

素因数の和:4579

約数の個数: 16

約数和(自身を含む): 38072592

約数和(自身を除く): 16966882

約数列:

[1, 2, 5, 10, 521, 1042, 2605, 4051, 5210, 8102, 20255, 40510, 2110571, 4221142, 10552855, 21105710]

約数ペア:

[(1, 21105710), (2, 10552855), (5, 4221142), (10, 2110571), (521, 40510), (1042, 20255), (2605, 8102), (4051, 5210)]