20617420

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{13049}}^1$

素因数の和:13137

約数の個数: 24

約数和(自身を含む): 43848000

約数和(自身を除く): 23230580

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 13049, 26098, 52196, 65245, 130490, 260980, 1030871, 2061742, 4123484, 5154355, 10308710, 20617420]

約数ペア:

[(1, 20617420), (2, 10308710), (4, 5154355), (5, 4123484), (10, 2061742), (20, 1030871), (79, 260980), (158, 130490), (316, 65245), (395, 52196), (790, 26098), (1580, 13049)]