21133025

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{103}}^1\times {\mathrm{283}}^1$

素因数の和:425

約数の個数: 24

約数和(自身を含む): 27468480

約数和(自身を除く): 6335455

約数列:

[1, 5, 25, 29, 103, 145, 283, 515, 725, 1415, 2575, 2987, 7075, 8207, 14935, 29149, 41035, 74675, 145745, 205175, 728725, 845321, 4226605, 21133025]

約数ペア:

[(1, 21133025), (5, 4226605), (25, 845321), (29, 728725), (103, 205175), (145, 145745), (283, 74675), (515, 41035), (725, 29149), (1415, 14935), (2575, 8207), (2987, 7075)]