51398980

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{32531}}^1$

素因数の和:32619

約数の個数: 24

約数和(自身を含む): 109307520

約数和(自身を除く): 57908540

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 32531, 65062, 130124, 162655, 325310, 650620, 2569949, 5139898, 10279796, 12849745, 25699490, 51398980]

約数ペア:

[(1, 51398980), (2, 25699490), (4, 12849745), (5, 10279796), (10, 5139898), (20, 2569949), (79, 650620), (158, 325310), (316, 162655), (395, 130124), (790, 65062), (1580, 32531)]