20913740

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61511}}^1$

素因数の和:61537

約数の個数: 24

約数和(自身を含む): 46503072

約数和(自身を除く): 25589332

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 61511, 123022, 246044, 307555, 615110, 1045687, 1230220, 2091374, 4182748, 5228435, 10456870, 20913740]

約数ペア:

[(1, 20913740), (2, 10456870), (4, 5228435), (5, 4182748), (10, 2091374), (17, 1230220), (20, 1045687), (34, 615110), (68, 307555), (85, 246044), (170, 123022), (340, 61511)]