19745887

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1\times {\mathrm{643}}^1$

素因数の和:798

約数の個数: 16

約数和(自身を含む): 23369472

約数和(自身を除く): 3623585

約数列:

[1, 7, 41, 107, 287, 643, 749, 4387, 4501, 26363, 30709, 68801, 184541, 481607, 2820841, 19745887]

約数ペア:

[(1, 19745887), (7, 2820841), (41, 481607), (107, 184541), (287, 68801), (643, 30709), (749, 26363), (4387, 4501)]