18388993

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{199}}^1\times {\mathrm{307}}^1$

素因数の和:556

約数の個数: 16

約数和(自身を含む): 21683200

約数和(自身を除く): 3294207

約数列:

[1, 7, 43, 199, 301, 307, 1393, 2149, 8557, 13201, 59899, 61093, 92407, 427651, 2626999, 18388993]

約数ペア:

[(1, 18388993), (7, 2626999), (43, 427651), (199, 92407), (301, 61093), (307, 59899), (1393, 13201), (2149, 8557)]