1280475300

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{328327}}^1$

素因数の和:328357

約数の個数: 72

約数和(自身を含む): 3989841856

約数和(自身を除く): 2709366556

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 50, 52, 60, 65, 75, 78, 100, 130, 150, 156, 195, 260, 300, 325, 390, 650, 780, 975, 1300, 1950, 3900, 328327, 656654, 984981, 1313308, 1641635, 1969962, 3283270, 3939924, 4268251, 4924905, 6566540, 8208175, 8536502, 9849810, 12804753, 16416350, 17073004, 19699620, 21341255, 24624525, 25609506, 32832700, 42682510, 49249050, 51219012, 64023765, 85365020, 98498100, 106706275, 128047530, 213412550, 256095060, 320118825, 426825100, 640237650, 1280475300]

約数ペア:

[(1, 1280475300), (2, 640237650), (3, 426825100), (4, 320118825), (5, 256095060), (6, 213412550), (10, 128047530), (12, 106706275), (13, 98498100), (15, 85365020), (20, 64023765), (25, 51219012), (26, 49249050), (30, 42682510), (39, 32832700), (50, 25609506), (52, 24624525), (60, 21341255), (65, 19699620), (75, 17073004), (78, 16416350), (100, 12804753), (130, 9849810), (150, 8536502), (156, 8208175), (195, 6566540), (260, 4924905), (300, 4268251), (325, 3939924), (390, 3283270), (650, 1969962), (780, 1641635), (975, 1313308), (1300, 984981), (1950, 656654), (3900, 328327)]