28308880

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{5801}}^1$

素因数の和:5875

約数の個数: 40

約数和(自身を含む): 66908664

約数和(自身を除く): 38599784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 5801, 11602, 23204, 29005, 46408, 58010, 92816, 116020, 232040, 353861, 464080, 707722, 1415444, 1769305, 2830888, 3538610, 5661776, 7077220, 14154440, 28308880]

約数ペア:

[(1, 28308880), (2, 14154440), (4, 7077220), (5, 5661776), (8, 3538610), (10, 2830888), (16, 1769305), (20, 1415444), (40, 707722), (61, 464080), (80, 353861), (122, 232040), (244, 116020), (305, 92816), (488, 58010), (610, 46408), (976, 29005), (1220, 23204), (2440, 11602), (4880, 5801)]