20905412

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{47}}^1\times {\mathrm{919}}^1$

素因数の和:992

約数の個数: 36

約数和(自身を含む): 41112960

約数和(自身を除く): 20207548

約数列:

[1, 2, 4, 11, 22, 44, 47, 94, 121, 188, 242, 484, 517, 919, 1034, 1838, 2068, 3676, 5687, 10109, 11374, 20218, 22748, 40436, 43193, 86386, 111199, 172772, 222398, 444796, 475123, 950246, 1900492, 5226353, 10452706, 20905412]

約数ペア:

[(1, 20905412), (2, 10452706), (4, 5226353), (11, 1900492), (22, 950246), (44, 475123), (47, 444796), (94, 222398), (121, 172772), (188, 111199), (242, 86386), (484, 43193), (517, 40436), (919, 22748), (1034, 20218), (1838, 11374), (2068, 10109), (3676, 5687)]