20168980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{77573}}^1$

素因数の和:77595

約数の個数: 24

約数和(自身を含む): 45613512

約数和(自身を除く): 25444532

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 77573, 155146, 310292, 387865, 775730, 1008449, 1551460, 2016898, 4033796, 5042245, 10084490, 20168980]

約数ペア:

[(1, 20168980), (2, 10084490), (4, 5042245), (5, 4033796), (10, 2016898), (13, 1551460), (20, 1008449), (26, 775730), (52, 387865), (65, 310292), (130, 155146), (260, 77573)]