18955881

素因数分解:

$3^2\times 7^1\times {\mathrm{193}}^1\times {\mathrm{1559}}^1$

素因数の和:1765

約数の個数: 24

約数和(自身を含む): 31474560

約数和(自身を除く): 12518679

約数列:

[1, 3, 7, 9, 21, 63, 193, 579, 1351, 1559, 1737, 4053, 4677, 10913, 12159, 14031, 32739, 98217, 300887, 902661, 2106209, 2707983, 6318627, 18955881]

約数ペア:

[(1, 18955881), (3, 6318627), (7, 2707983), (9, 2106209), (21, 902661), (63, 300887), (193, 98217), (579, 32739), (1351, 14031), (1559, 12159), (1737, 10913), (4053, 4677)]