20743640

素因数分解:

$2^3\times 5^1\times {\mathrm{193}}^1\times {\mathrm{2687}}^1$

素因数の和:2891

約数の個数: 32

約数和(自身を含む): 46932480

約数和(自身を除く): 26188840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 193, 386, 772, 965, 1544, 1930, 2687, 3860, 5374, 7720, 10748, 13435, 21496, 26870, 53740, 107480, 518591, 1037182, 2074364, 2592955, 4148728, 5185910, 10371820, 20743640]

約数ペア:

[(1, 20743640), (2, 10371820), (4, 5185910), (5, 4148728), (8, 2592955), (10, 2074364), (20, 1037182), (40, 518591), (193, 107480), (386, 53740), (772, 26870), (965, 21496), (1544, 13435), (1930, 10748), (2687, 7720), (3860, 5374)]