257538840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{165089}}^1$

素因数の和:165116

約数の個数: 64

約数和(自身を含む): 832053600

約数和(自身を除く): 574514760

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, 165089, 330178, 495267, 660356, 825445, 990534, 1320712, 1650890, 1981068, 2146157, 2476335, 3301780, 3962136, 4292314, 4952670, 6438471, 6603560, 8584628, 9905340, 10730785, 12876942, 17169256, 19810680, 21461570, 25753884, 32192355, 42923140, 51507768, 64384710, 85846280, 128769420, 257538840]

約数ペア:

[(1, 257538840), (2, 128769420), (3, 85846280), (4, 64384710), (5, 51507768), (6, 42923140), (8, 32192355), (10, 25753884), (12, 21461570), (13, 19810680), (15, 17169256), (20, 12876942), (24, 10730785), (26, 9905340), (30, 8584628), (39, 6603560), (40, 6438471), (52, 4952670), (60, 4292314), (65, 3962136), (78, 3301780), (104, 2476335), (120, 2146157), (130, 1981068), (156, 1650890), (195, 1320712), (260, 990534), (312, 825445), (390, 660356), (520, 495267), (780, 330178), (1560, 165089)]