19912425

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{1571}}^1$

素因数の和:1610

約数の個数: 36

約数和(自身を含む): 35671824

約数和(自身を除く): 15759399

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 169, 195, 325, 507, 845, 975, 1571, 2535, 4225, 4713, 7855, 12675, 20423, 23565, 39275, 61269, 102115, 117825, 265499, 306345, 510575, 796497, 1327495, 1531725, 3982485, 6637475, 19912425]

約数ペア:

[(1, 19912425), (3, 6637475), (5, 3982485), (13, 1531725), (15, 1327495), (25, 796497), (39, 510575), (65, 306345), (75, 265499), (169, 117825), (195, 102115), (325, 61269), (507, 39275), (845, 23565), (975, 20423), (1571, 12675), (2535, 7855), (4225, 4713)]