20516984

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{42043}}^1$

素因数の和:42110

約数の個数: 16

約数和(自身を含む): 39100920

約数和(自身を除く): 18583936

約数列:

[1, 2, 4, 8, 61, 122, 244, 488, 42043, 84086, 168172, 336344, 2564623, 5129246, 10258492, 20516984]

約数ペア:

[(1, 20516984), (2, 10258492), (4, 5129246), (8, 2564623), (61, 336344), (122, 168172), (244, 84086), (488, 42043)]