20894375

素因数分解:

$5^4\times {\mathrm{101}}^1\times {\mathrm{331}}^1$

素因数の和:452

約数の個数: 20

約数和(自身を含む): 26447784

約数和(自身を除く): 5553409

約数列:

[1, 5, 25, 101, 125, 331, 505, 625, 1655, 2525, 8275, 12625, 33431, 41375, 63125, 167155, 206875, 835775, 4178875, 20894375]

約数ペア:

[(1, 20894375), (5, 4178875), (25, 835775), (101, 206875), (125, 167155), (331, 63125), (505, 41375), (625, 33431), (1655, 12625), (2525, 8275)]