19872840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{12739}}^1$

素因数の和:12766

約数の個数: 64

約数和(自身を含む): 64209600

約数和(自身を除く): 44336760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 12739, 25478, 38217, 50956, 63695, 76434, 101912, 127390, 152868, 165607, 191085, 254780, 305736, 331214, 382170, 496821, 509560, 662428, 764340, 828035, 993642, 1324856, 1528680, 1656070, 1987284, 2484105, 3312140, 3974568, 4968210, 6624280, 9936420, 19872840]

約数ペア:

[(1, 19872840), (2, 9936420), (3, 6624280), (4, 4968210), (5, 3974568), (6, 3312140), (8, 2484105), (10, 1987284), (12, 1656070), (13, 1528680), (15, 1324856), (20, 993642), (24, 828035), (26, 764340), (30, 662428), (39, 509560), (40, 496821), (52, 382170), (60, 331214), (65, 305736), (78, 254780), (104, 191085), (120, 165607), (130, 152868), (156, 127390), (195, 101912), (260, 76434), (312, 63695), (390, 50956), (520, 38217), (780, 25478), (1560, 12739)]