20935825

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{431}}^1$

素因数の和:537

約数の個数: 24

約数和(自身を含む): 27319680

約数和(自身を除く): 6383855

約数列:

[1, 5, 25, 29, 67, 145, 335, 431, 725, 1675, 1943, 2155, 9715, 10775, 12499, 28877, 48575, 62495, 144385, 312475, 721925, 837433, 4187165, 20935825]

約数ペア:

[(1, 20935825), (5, 4187165), (25, 837433), (29, 721925), (67, 312475), (145, 144385), (335, 62495), (431, 48575), (725, 28877), (1675, 12499), (1943, 10775), (2155, 9715)]