21637625

素因数分解:

$5^3\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{127}}^1$

素因数の和:218

約数の個数: 32

約数和(自身を含む): 28753920

約数和(自身を除く): 7116295

約数列:

[1, 5, 25, 29, 47, 125, 127, 145, 235, 635, 725, 1175, 1363, 3175, 3625, 3683, 5875, 5969, 6815, 15875, 18415, 29845, 34075, 92075, 149225, 170375, 173101, 460375, 746125, 865505, 4327525, 21637625]

約数ペア:

[(1, 21637625), (5, 4327525), (25, 865505), (29, 746125), (47, 460375), (125, 173101), (127, 170375), (145, 149225), (235, 92075), (635, 34075), (725, 29845), (1175, 18415), (1363, 15875), (3175, 6815), (3625, 5969), (3683, 5875)]