28551640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{54907}}^1$

素因数の和:54931

約数の個数: 32

約数和(自身を含む): 69184080

約数和(自身を除く): 40632440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 54907, 109814, 219628, 274535, 439256, 549070, 713791, 1098140, 1427582, 2196280, 2855164, 3568955, 5710328, 7137910, 14275820, 28551640]

約数ペア:

[(1, 28551640), (2, 14275820), (4, 7137910), (5, 5710328), (8, 3568955), (10, 2855164), (13, 2196280), (20, 1427582), (26, 1098140), (40, 713791), (52, 549070), (65, 439256), (104, 274535), (130, 219628), (260, 109814), (520, 54907)]