18977445

素因数分解:

$3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1$

素因数の和:246

約数の個数: 48

約数和(自身を含む): 34285680

約数和(自身を除く): 15308235

約数列:

[1, 3, 5, 9, 15, 45, 53, 73, 109, 159, 219, 265, 327, 365, 477, 545, 657, 795, 981, 1095, 1635, 2385, 3285, 3869, 4905, 5777, 7957, 11607, 17331, 19345, 23871, 28885, 34821, 39785, 51993, 58035, 71613, 86655, 119355, 174105, 259965, 358065, 421721, 1265163, 2108605, 3795489, 6325815, 18977445]

約数ペア:

[(1, 18977445), (3, 6325815), (5, 3795489), (9, 2108605), (15, 1265163), (45, 421721), (53, 358065), (73, 259965), (109, 174105), (159, 119355), (219, 86655), (265, 71613), (327, 58035), (365, 51993), (477, 39785), (545, 34821), (657, 28885), (795, 23871), (981, 19345), (1095, 17331), (1635, 11607), (2385, 7957), (3285, 5777), (3869, 4905)]