2015961775

素因数分解:

$5^2\times {\mathrm{31}}^2\times {\mathrm{83911}}^1$

素因数の和:83983

約数の個数: 18

約数和(自身を含む): 2583063096

約数和(自身を除く): 567101321

約数列:

[1, 5, 25, 31, 155, 775, 961, 4805, 24025, 83911, 419555, 2097775, 2601241, 13006205, 65031025, 80638471, 403192355, 2015961775]

約数ペア:

[(1, 2015961775), (5, 403192355), (25, 80638471), (31, 65031025), (155, 13006205), (775, 2601241), (961, 2097775), (4805, 419555), (24025, 83911)]