20843420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{80167}}^1$

素因数の和:80189

約数の個数: 24

約数和(自身を含む): 47138784

約数和(自身を除く): 26295364

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 80167, 160334, 320668, 400835, 801670, 1042171, 1603340, 2084342, 4168684, 5210855, 10421710, 20843420]

約数ペア:

[(1, 20843420), (2, 10421710), (4, 5210855), (5, 4168684), (10, 2084342), (13, 1603340), (20, 1042171), (26, 801670), (52, 400835), (65, 320668), (130, 160334), (260, 80167)]