18171640

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{26723}}^1$

素因数の和:26751

約数の個数: 32

約数和(自身を含む): 43292880

約数和(自身を除く): 25121240

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 26723, 53446, 106892, 133615, 213784, 267230, 454291, 534460, 908582, 1068920, 1817164, 2271455, 3634328, 4542910, 9085820, 18171640]

約数ペア:

[(1, 18171640), (2, 9085820), (4, 4542910), (5, 3634328), (8, 2271455), (10, 1817164), (17, 1068920), (20, 908582), (34, 534460), (40, 454291), (68, 267230), (85, 213784), (136, 133615), (170, 106892), (340, 53446), (680, 26723)]