21122620

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{19927}}^1$

素因数の和:19989

約数の個数: 24

約数和(自身を含む): 45196704

約数和(自身を除く): 24074084

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 530, 1060, 19927, 39854, 79708, 99635, 199270, 398540, 1056131, 2112262, 4224524, 5280655, 10561310, 21122620]

約数ペア:

[(1, 21122620), (2, 10561310), (4, 5280655), (5, 4224524), (10, 2112262), (20, 1056131), (53, 398540), (106, 199270), (212, 99635), (265, 79708), (530, 39854), (1060, 19927)]