291211960

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{560023}}^1$

素因数の和:560047

約数の個数: 32

約数和(自身を含む): 705630240

約数和(自身を除く): 414418280

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 560023, 1120046, 2240092, 2800115, 4480184, 5600230, 7280299, 11200460, 14560598, 22400920, 29121196, 36401495, 58242392, 72802990, 145605980, 291211960]

約数ペア:

[(1, 291211960), (2, 145605980), (4, 72802990), (5, 58242392), (8, 36401495), (10, 29121196), (13, 22400920), (20, 14560598), (26, 11200460), (40, 7280299), (52, 5600230), (65, 4480184), (104, 2800115), (130, 2240092), (260, 1120046), (520, 560023)]