20948972

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{43283}}^1$

素因数の和:43309

約数の個数: 18

約数和(自身を含む): 40297404

約数和(自身を除く): 19348432

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 43283, 86566, 173132, 476113, 952226, 1904452, 5237243, 10474486, 20948972]

約数ペア:

[(1, 20948972), (2, 10474486), (4, 5237243), (11, 1904452), (22, 952226), (44, 476113), (121, 173132), (242, 86566), (484, 43283)]