31690701

素因数分解:

$3^2\times 7^2\times {\mathrm{71861}}^1$

素因数の和:71881

約数の個数: 18

約数和(自身を含む): 53249742

約数和(自身を除く): 21559041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 71861, 215583, 503027, 646749, 1509081, 3521189, 4527243, 10563567, 31690701]

約数ペア:

[(1, 31690701), (3, 10563567), (7, 4527243), (9, 3521189), (21, 1509081), (49, 646749), (63, 503027), (147, 215583), (441, 71861)]