20123825

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{677}}^1$

素因数の和:757

約数の個数: 24

約数和(自身を含む): 26482680

約数和(自身を除く): 6358855

約数列:

[1, 5, 25, 29, 41, 145, 205, 677, 725, 1025, 1189, 3385, 5945, 16925, 19633, 27757, 29725, 98165, 138785, 490825, 693925, 804953, 4024765, 20123825]

約数ペア:

[(1, 20123825), (5, 4024765), (25, 804953), (29, 693925), (41, 490825), (145, 138785), (205, 98165), (677, 29725), (725, 27757), (1025, 19633), (1189, 16925), (3385, 5945)]