21938525

素因数分解:

$5^2\times 7^2\times {\mathrm{17909}}^1$

素因数の和:17933

約数の個数: 18

約数和(自身を含む): 31646970

約数和(自身を除く): 9708445

約数列:

[1, 5, 7, 25, 35, 49, 175, 245, 1225, 17909, 89545, 125363, 447725, 626815, 877541, 3134075, 4387705, 21938525]

約数ペア:

[(1, 21938525), (5, 4387705), (7, 3134075), (25, 877541), (35, 626815), (49, 447725), (175, 125363), (245, 89545), (1225, 17909)]