25712920

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^2\times {\mathrm{103}}^1$

素因数の和:272

約数の個数: 48

約数和(自身を含む): 59164560

約数和(自身を除く): 33451640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 103, 158, 206, 316, 395, 412, 515, 632, 790, 824, 1030, 1580, 2060, 3160, 4120, 6241, 8137, 12482, 16274, 24964, 31205, 32548, 40685, 49928, 62410, 65096, 81370, 124820, 162740, 249640, 325480, 642823, 1285646, 2571292, 3214115, 5142584, 6428230, 12856460, 25712920]

約数ペア:

[(1, 25712920), (2, 12856460), (4, 6428230), (5, 5142584), (8, 3214115), (10, 2571292), (20, 1285646), (40, 642823), (79, 325480), (103, 249640), (158, 162740), (206, 124820), (316, 81370), (395, 65096), (412, 62410), (515, 49928), (632, 40685), (790, 32548), (824, 31205), (1030, 24964), (1580, 16274), (2060, 12482), (3160, 8137), (4120, 6241)]