20595280

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{5987}}^1$

素因数の和:6043

約数の個数: 40

約数和(自身を含む): 49005792

約数和(自身を除く): 28410512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 5987, 11974, 23948, 29935, 47896, 59870, 95792, 119740, 239480, 257441, 478960, 514882, 1029764, 1287205, 2059528, 2574410, 4119056, 5148820, 10297640, 20595280]

約数ペア:

[(1, 20595280), (2, 10297640), (4, 5148820), (5, 4119056), (8, 2574410), (10, 2059528), (16, 1287205), (20, 1029764), (40, 514882), (43, 478960), (80, 257441), (86, 239480), (172, 119740), (215, 95792), (344, 59870), (430, 47896), (688, 29935), (860, 23948), (1720, 11974), (3440, 5987)]