20539375

素因数分解:

$5^4\times {\mathrm{59}}^1\times {\mathrm{557}}^1$

素因数の和:636

約数の個数: 20

約数和(自身を含む): 26147880

約数和(自身を除く): 5608505

約数列:

[1, 5, 25, 59, 125, 295, 557, 625, 1475, 2785, 7375, 13925, 32863, 36875, 69625, 164315, 348125, 821575, 4107875, 20539375]

約数ペア:

[(1, 20539375), (5, 4107875), (25, 821575), (59, 348125), (125, 164315), (295, 69625), (557, 36875), (625, 32863), (1475, 13925), (2785, 7375)]