21553004

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{44531}}^1$

素因数の和:44557

約数の個数: 18

約数和(自身を含む): 41459292

約数和(自身を除く): 19906288

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 44531, 89062, 178124, 489841, 979682, 1959364, 5388251, 10776502, 21553004]

約数ペア:

[(1, 21553004), (2, 10776502), (4, 5388251), (11, 1959364), (22, 979682), (44, 489841), (121, 178124), (242, 89062), (484, 44531)]