18615640

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{11351}}^1$

素因数の和:11403

約数の個数: 32

約数和(自身を含む): 42910560

約数和(自身を除く): 24294920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 11351, 22702, 45404, 56755, 90808, 113510, 227020, 454040, 465391, 930782, 1861564, 2326955, 3723128, 4653910, 9307820, 18615640]

約数ペア:

[(1, 18615640), (2, 9307820), (4, 4653910), (5, 3723128), (8, 2326955), (10, 1861564), (20, 930782), (40, 465391), (41, 454040), (82, 227020), (164, 113510), (205, 90808), (328, 56755), (410, 45404), (820, 22702), (1640, 11351)]