20678710

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{2179}}^1$

素因数の和:2272

約数の個数: 32

約数和(自身を含む): 40652640

約数和(自身を除く): 19973930

約数列:

[1, 2, 5, 10, 13, 26, 65, 73, 130, 146, 365, 730, 949, 1898, 2179, 4358, 4745, 9490, 10895, 21790, 28327, 56654, 141635, 159067, 283270, 318134, 795335, 1590670, 2067871, 4135742, 10339355, 20678710]

約数ペア:

[(1, 20678710), (2, 10339355), (5, 4135742), (10, 2067871), (13, 1590670), (26, 795335), (65, 318134), (73, 283270), (130, 159067), (146, 141635), (365, 56654), (730, 28327), (949, 21790), (1898, 10895), (2179, 9490), (4358, 4745)]