21081525

素因数分解:

$3^1\times 5^2\times {\mathrm{103}}^1\times {\mathrm{2729}}^1$

素因数の和:2845

約数の個数: 24

約数和(自身を含む): 35206080

約数和(自身を除く): 14124555

約数列:

[1, 3, 5, 15, 25, 75, 103, 309, 515, 1545, 2575, 2729, 7725, 8187, 13645, 40935, 68225, 204675, 281087, 843261, 1405435, 4216305, 7027175, 21081525]

約数ペア:

[(1, 21081525), (3, 7027175), (5, 4216305), (15, 1405435), (25, 843261), (75, 281087), (103, 204675), (309, 68225), (515, 40935), (1545, 13645), (2575, 8187), (2729, 7725)]