64861680

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{20789}}^1$

素因数の和:20818

約数の個数: 80

約数和(自身を含む): 216548640

約数和(自身を除く): 151686960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120, 20789, 41578, 62367, 83156, 103945, 124734, 166312, 207890, 249468, 270257, 311835, 332624, 415780, 498936, 540514, 623670, 810771, 831560, 997872, 1081028, 1247340, 1351285, 1621542, 1663120, 2162056, 2494680, 2702570, 3243084, 4053855, 4324112, 4989360, 5405140, 6486168, 8107710, 10810280, 12972336, 16215420, 21620560, 32430840, 64861680]

約数ペア:

[(1, 64861680), (2, 32430840), (3, 21620560), (4, 16215420), (5, 12972336), (6, 10810280), (8, 8107710), (10, 6486168), (12, 5405140), (13, 4989360), (15, 4324112), (16, 4053855), (20, 3243084), (24, 2702570), (26, 2494680), (30, 2162056), (39, 1663120), (40, 1621542), (48, 1351285), (52, 1247340), (60, 1081028), (65, 997872), (78, 831560), (80, 810771), (104, 623670), (120, 540514), (130, 498936), (156, 415780), (195, 332624), (208, 311835), (240, 270257), (260, 249468), (312, 207890), (390, 166312), (520, 124734), (624, 103945), (780, 83156), (1040, 62367), (1560, 41578), (3120, 20789)]