19854359

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{223}}^1$

素因数の和:339

約数の個数: 24

約数和(自身を含む): 24514560

約数和(自身を除く): 4660201

約数列:

[1, 7, 23, 49, 79, 161, 223, 553, 1127, 1561, 1817, 3871, 5129, 10927, 12719, 17617, 35903, 89033, 123319, 251321, 405191, 863233, 2836337, 19854359]

約数ペア:

[(1, 19854359), (7, 2836337), (23, 863233), (49, 405191), (79, 251321), (161, 123319), (223, 89033), (553, 35903), (1127, 17617), (1561, 12719), (1817, 10927), (3871, 5129)]