18720808

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{137653}}^1$

素因数の和:137676

約数の個数: 16

約数和(自身を含む): 37166580

約数和(自身を除く): 18445772

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 137653, 275306, 550612, 1101224, 2340101, 4680202, 9360404, 18720808]

約数ペア:

[(1, 18720808), (2, 9360404), (4, 4680202), (8, 2340101), (17, 1101224), (34, 550612), (68, 275306), (136, 137653)]