18310985

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{239}}^1$

素因数の和:461

約数の個数: 32

約数和(自身を含む): 27648000

約数和(自身を除く): 9337015

約数列:

[1, 5, 7, 11, 35, 55, 77, 199, 239, 385, 995, 1195, 1393, 1673, 2189, 2629, 6965, 8365, 10945, 13145, 15323, 18403, 47561, 76615, 92015, 237805, 332927, 523171, 1664635, 2615855, 3662197, 18310985]

約数ペア:

[(1, 18310985), (5, 3662197), (7, 2615855), (11, 1664635), (35, 523171), (55, 332927), (77, 237805), (199, 92015), (239, 76615), (385, 47561), (995, 18403), (1195, 15323), (1393, 13145), (1673, 10945), (2189, 8365), (2629, 6965)]