21098416

素因数分解:

$2^4\times {\mathrm{521}}^1\times {\mathrm{2531}}^1$

素因数の和:3060

約数の個数: 20

約数和(自身を含む): 40972824

約数和(自身を除く): 19874408

約数列:

[1, 2, 4, 8, 16, 521, 1042, 2084, 2531, 4168, 5062, 8336, 10124, 20248, 40496, 1318651, 2637302, 5274604, 10549208, 21098416]

約数ペア:

[(1, 21098416), (2, 10549208), (4, 5274604), (8, 2637302), (16, 1318651), (521, 40496), (1042, 20248), (2084, 10124), (2531, 8336), (4168, 5062)]