18135640

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{3461}}^1$

素因数の和:3603

約数の個数: 32

約数和(自身を含む): 41128560

約数和(自身を除く): 22992920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 2620, 3461, 5240, 6922, 13844, 17305, 27688, 34610, 69220, 138440, 453391, 906782, 1813564, 2266955, 3627128, 4533910, 9067820, 18135640]

約数ペア:

[(1, 18135640), (2, 9067820), (4, 4533910), (5, 3627128), (8, 2266955), (10, 1813564), (20, 906782), (40, 453391), (131, 138440), (262, 69220), (524, 34610), (655, 27688), (1048, 17305), (1310, 13844), (2620, 6922), (3461, 5240)]