19668968

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{397}}^1\times {\mathrm{563}}^1$

素因数の和:977

約数の個数: 32

約数和(自身を含む): 40404960

約数和(自身を除く): 20735992

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 397, 563, 794, 1126, 1588, 2252, 3176, 4367, 4504, 6193, 8734, 12386, 17468, 24772, 34936, 49544, 223511, 447022, 894044, 1788088, 2458621, 4917242, 9834484, 19668968]

約数ペア:

[(1, 19668968), (2, 9834484), (4, 4917242), (8, 2458621), (11, 1788088), (22, 894044), (44, 447022), (88, 223511), (397, 49544), (563, 34936), (794, 24772), (1126, 17468), (1588, 12386), (2252, 8734), (3176, 6193), (4367, 4504)]