287981305

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{103}}^2$

素因数の和:361

約数の個数: 24

約数和(自身を含む): 358671240

約数和(自身を除く): 70689935

約数列:

[1, 5, 61, 89, 103, 305, 445, 515, 5429, 6283, 9167, 10609, 27145, 31415, 45835, 53045, 559187, 647149, 944201, 2795935, 3235745, 4721005, 57596261, 287981305]

約数ペア:

[(1, 287981305), (5, 57596261), (61, 4721005), (89, 3235745), (103, 2795935), (305, 944201), (445, 647149), (515, 559187), (5429, 53045), (6283, 45835), (9167, 31415), (10609, 27145)]