687515140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{647}}^1$

素因数の和:797

約数の個数: 96

約数和(自身を含む): 1606397184

約数和(自身を除く): 918882044

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 61, 65, 67, 122, 130, 134, 244, 260, 268, 305, 335, 610, 647, 670, 793, 871, 1220, 1294, 1340, 1586, 1742, 2588, 3172, 3235, 3484, 3965, 4087, 4355, 6470, 7930, 8174, 8411, 8710, 12940, 15860, 16348, 16822, 17420, 20435, 33644, 39467, 40870, 42055, 43349, 53131, 78934, 81740, 84110, 86698, 106262, 157868, 168220, 173396, 197335, 212524, 216745, 265655, 394670, 433490, 513071, 531310, 563537, 789340, 866980, 1026142, 1062620, 1127074, 2052284, 2254148, 2565355, 2644289, 2817685, 5130710, 5288578, 5635370, 10261420, 10577156, 11270740, 13221445, 26442890, 34375757, 52885780, 68751514, 137503028, 171878785, 343757570, 687515140]

約数ペア:

[(1, 687515140), (2, 343757570), (4, 171878785), (5, 137503028), (10, 68751514), (13, 52885780), (20, 34375757), (26, 26442890), (52, 13221445), (61, 11270740), (65, 10577156), (67, 10261420), (122, 5635370), (130, 5288578), (134, 5130710), (244, 2817685), (260, 2644289), (268, 2565355), (305, 2254148), (335, 2052284), (610, 1127074), (647, 1062620), (670, 1026142), (793, 866980), (871, 789340), (1220, 563537), (1294, 531310), (1340, 513071), (1586, 433490), (1742, 394670), (2588, 265655), (3172, 216745), (3235, 212524), (3484, 197335), (3965, 173396), (4087, 168220), (4355, 157868), (6470, 106262), (7930, 86698), (8174, 84110), (8411, 81740), (8710, 78934), (12940, 53131), (15860, 43349), (16348, 42055), (16822, 40870), (17420, 39467), (20435, 33644)]