20917028

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{1879}}^1$

素因数の和:1928

約数の個数: 36

約数和(自身を含む): 42006720

約数和(自身を除く): 21089692

約数列:

[1, 2, 4, 11, 22, 23, 44, 46, 92, 121, 242, 253, 484, 506, 1012, 1879, 2783, 3758, 5566, 7516, 11132, 20669, 41338, 43217, 82676, 86434, 172868, 227359, 454718, 475387, 909436, 950774, 1901548, 5229257, 10458514, 20917028]

約数ペア:

[(1, 20917028), (2, 10458514), (4, 5229257), (11, 1901548), (22, 950774), (23, 909436), (44, 475387), (46, 454718), (92, 227359), (121, 172868), (242, 86434), (253, 82676), (484, 43217), (506, 41338), (1012, 20669), (1879, 11132), (2783, 7516), (3758, 5566)]