20513125

素因数分解:

$5^4\times {\mathrm{23}}^1\times {\mathrm{1427}}^1$

素因数の和:1470

約数の個数: 20

約数和(自身を含む): 26766432

約数和(自身を除く): 6253307

約数列:

[1, 5, 23, 25, 115, 125, 575, 625, 1427, 2875, 7135, 14375, 32821, 35675, 164105, 178375, 820525, 891875, 4102625, 20513125]

約数ペア:

[(1, 20513125), (5, 4102625), (23, 891875), (25, 820525), (115, 178375), (125, 164105), (575, 35675), (625, 32821), (1427, 14375), (2875, 7135)]