21490625

素因数分解:

$5^5\times {\mathrm{13}}^1\times {\mathrm{23}}^2$

素因数の和:84

約数の個数: 36

約数和(自身を含む): 30240252

約数和(自身を除く): 8749627

約数列:

[1, 5, 13, 23, 25, 65, 115, 125, 299, 325, 529, 575, 625, 1495, 1625, 2645, 2875, 3125, 6877, 7475, 8125, 13225, 14375, 34385, 37375, 40625, 66125, 71875, 171925, 186875, 330625, 859625, 934375, 1653125, 4298125, 21490625]

約数ペア:

[(1, 21490625), (5, 4298125), (13, 1653125), (23, 934375), (25, 859625), (65, 330625), (115, 186875), (125, 171925), (299, 71875), (325, 66125), (529, 40625), (575, 37375), (625, 34385), (1495, 14375), (1625, 13225), (2645, 8125), (2875, 7475), (3125, 6877)]