78876760

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1\times {\mathrm{229}}^1$

素因数の和:428

約数の個数: 64

約数和(自身を含む): 182160000

約数和(自身を除く): 103283240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 109, 158, 218, 229, 316, 395, 436, 458, 545, 632, 790, 872, 916, 1090, 1145, 1580, 1832, 2180, 2290, 3160, 4360, 4580, 8611, 9160, 17222, 18091, 24961, 34444, 36182, 43055, 49922, 68888, 72364, 86110, 90455, 99844, 124805, 144728, 172220, 180910, 199688, 249610, 344440, 361820, 499220, 723640, 998440, 1971919, 3943838, 7887676, 9859595, 15775352, 19719190, 39438380, 78876760]

約数ペア:

[(1, 78876760), (2, 39438380), (4, 19719190), (5, 15775352), (8, 9859595), (10, 7887676), (20, 3943838), (40, 1971919), (79, 998440), (109, 723640), (158, 499220), (218, 361820), (229, 344440), (316, 249610), (395, 199688), (436, 180910), (458, 172220), (545, 144728), (632, 124805), (790, 99844), (872, 90455), (916, 86110), (1090, 72364), (1145, 68888), (1580, 49922), (1832, 43055), (2180, 36182), (2290, 34444), (3160, 24961), (4360, 18091), (4580, 17222), (8611, 9160)]