399987120

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{128201}}^1$

素因数の和:128230

約数の個数: 80

約数和(自身を含む): 1335352032

約数和(自身を除く): 935364912

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, 128201, 256402, 384603, 512804, 641005, 769206, 1025608, 1282010, 1538412, 1666613, 1923015, 2051216, 2564020, 3076824, 3333226, 3846030, 4999839, 5128040, 6153648, 6666452, 7692060, 8333065, 9999678, 10256080, 13332904, 15384120, 16666130, 19999356, 24999195, 26665808, 30768240, 33332260, 39998712, 49998390, 66664520, 79997424, 99996780, 133329040, 199993560, 399987120]

約数ペア:

[(1, 399987120), (2, 199993560), (3, 133329040), (4, 99996780), (5, 79997424), (6, 66664520), (8, 49998390), (10, 39998712), (12, 33332260), (13, 30768240), (15, 26665808), (16, 24999195), (20, 19999356), (24, 16666130), (26, 15384120), (30, 13332904), (39, 10256080), (40, 9999678), (48, 8333065), (52, 7692060), (60, 6666452), (65, 6153648), (78, 5128040), (80, 4999839), (104, 3846030), (120, 3333226), (130, 3076824), (156, 2564020), (195, 2051216), (208, 1923015), (240, 1666613), (260, 1538412), (312, 1282010), (390, 1025608), (520, 769206), (624, 641005), (780, 512804), (1040, 384603), (1560, 256402), (3120, 128201)]