19666155

素因数分解:

$3^1\times 5^1\times {\mathrm{643}}^1\times {\mathrm{2039}}^1$

素因数の和:2690

約数の個数: 16

約数和(自身を含む): 31530240

約数和(自身を除く): 11864085

約数列:

[1, 3, 5, 15, 643, 1929, 2039, 3215, 6117, 9645, 10195, 30585, 1311077, 3933231, 6555385, 19666155]

約数ペア:

[(1, 19666155), (3, 6555385), (5, 3933231), (15, 1311077), (643, 30585), (1929, 10195), (2039, 9645), (3215, 6117)]