18589291

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{113}}^1\times {\mathrm{331}}^1$

素因数の和:522

約数の個数: 16

約数和(自身を含む): 21800448

約数和(自身を除く): 3211157

約数列:

[1, 7, 71, 113, 331, 497, 791, 2317, 8023, 23501, 37403, 56161, 164507, 261821, 2655613, 18589291]

約数ペア:

[(1, 18589291), (7, 2655613), (71, 261821), (113, 164507), (331, 56161), (497, 37403), (791, 23501), (2317, 8023)]