64907440

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{449}}^1$

素因数の和:614

約数の個数: 80

約数和(自身を含む): 164052000

約数和(自身を除く): 99144560

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 139, 208, 260, 278, 449, 520, 556, 695, 898, 1040, 1112, 1390, 1796, 1807, 2224, 2245, 2780, 3592, 3614, 4490, 5560, 5837, 7184, 7228, 8980, 9035, 11120, 11674, 14456, 17960, 18070, 23348, 28912, 29185, 35920, 36140, 46696, 58370, 62411, 72280, 93392, 116740, 124822, 144560, 233480, 249644, 312055, 466960, 499288, 624110, 811343, 998576, 1248220, 1622686, 2496440, 3245372, 4056715, 4992880, 6490744, 8113430, 12981488, 16226860, 32453720, 64907440]

約数ペア:

[(1, 64907440), (2, 32453720), (4, 16226860), (5, 12981488), (8, 8113430), (10, 6490744), (13, 4992880), (16, 4056715), (20, 3245372), (26, 2496440), (40, 1622686), (52, 1248220), (65, 998576), (80, 811343), (104, 624110), (130, 499288), (139, 466960), (208, 312055), (260, 249644), (278, 233480), (449, 144560), (520, 124822), (556, 116740), (695, 93392), (898, 72280), (1040, 62411), (1112, 58370), (1390, 46696), (1796, 36140), (1807, 35920), (2224, 29185), (2245, 28912), (2780, 23348), (3592, 18070), (3614, 17960), (4490, 14456), (5560, 11674), (5837, 11120), (7184, 9035), (7228, 8980)]