2131275

素因数分解:

$3^1\times 5^2\times {\mathrm{157}}^1\times {\mathrm{181}}^1$

素因数の和:351

約数の個数: 24

約数和(自身を含む): 3565744

約数和(自身を除く): 1434469

約数列:

[1, 3, 5, 15, 25, 75, 157, 181, 471, 543, 785, 905, 2355, 2715, 3925, 4525, 11775, 13575, 28417, 85251, 142085, 426255, 710425, 2131275]

約数ペア:

[(1, 2131275), (3, 710425), (5, 426255), (15, 142085), (25, 85251), (75, 28417), (157, 13575), (181, 11775), (471, 4525), (543, 3925), (785, 2715), (905, 2355)]