20621816

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{151631}}^1$

素因数の和:151654

約数の個数: 16

約数和(自身を含む): 40940640

約数和(自身を除く): 20318824

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 151631, 303262, 606524, 1213048, 2577727, 5155454, 10310908, 20621816]

約数ペア:

[(1, 20621816), (2, 10310908), (4, 5155454), (8, 2577727), (17, 1213048), (34, 606524), (68, 303262), (136, 151631)]