28988440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{521}}^1$

素因数の和:652

約数の個数: 64

約数和(自身を含む): 71033760

約数和(自身を除く): 42045320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 107, 130, 214, 260, 428, 520, 521, 535, 856, 1042, 1070, 1391, 2084, 2140, 2605, 2782, 4168, 4280, 5210, 5564, 6773, 6955, 10420, 11128, 13546, 13910, 20840, 27092, 27820, 33865, 54184, 55640, 55747, 67730, 111494, 135460, 222988, 270920, 278735, 445976, 557470, 724711, 1114940, 1449422, 2229880, 2898844, 3623555, 5797688, 7247110, 14494220, 28988440]

約数ペア:

[(1, 28988440), (2, 14494220), (4, 7247110), (5, 5797688), (8, 3623555), (10, 2898844), (13, 2229880), (20, 1449422), (26, 1114940), (40, 724711), (52, 557470), (65, 445976), (104, 278735), (107, 270920), (130, 222988), (214, 135460), (260, 111494), (428, 67730), (520, 55747), (521, 55640), (535, 54184), (856, 33865), (1042, 27820), (1070, 27092), (1391, 20840), (2084, 13910), (2140, 13546), (2605, 11128), (2782, 10420), (4168, 6955), (4280, 6773), (5210, 5564)]