21691835

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{521}}^1\times {\mathrm{757}}^1$

素因数の和:1294

約数の個数: 16

約数和(自身を含む): 28488672

約数和(自身を除く): 6796837

約数列:

[1, 5, 11, 55, 521, 757, 2605, 3785, 5731, 8327, 28655, 41635, 394397, 1971985, 4338367, 21691835]

約数ペア:

[(1, 21691835), (5, 4338367), (11, 1971985), (55, 394397), (521, 41635), (757, 28655), (2605, 8327), (3785, 5731)]