21234820

素因数分解:

$2^2\times 5^1\times {\mathrm{277}}^1\times {\mathrm{3833}}^1$

素因数の和:4119

約数の個数: 24

約数和(自身を含む): 44765784

約数和(自身を除く): 23530964

約数列:

[1, 2, 4, 5, 10, 20, 277, 554, 1108, 1385, 2770, 3833, 5540, 7666, 15332, 19165, 38330, 76660, 1061741, 2123482, 4246964, 5308705, 10617410, 21234820]

約数ペア:

[(1, 21234820), (2, 10617410), (4, 5308705), (5, 4246964), (10, 2123482), (20, 1061741), (277, 76660), (554, 38330), (1108, 19165), (1385, 15332), (2770, 7666), (3833, 5540)]