21990298

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{89}}^1\times {\mathrm{1021}}^1$

素因数の和:1134

約数の個数: 24

約数和(自身を含む): 36700020

約数和(自身を除く): 14709722

約数列:

[1, 2, 11, 22, 89, 121, 178, 242, 979, 1021, 1958, 2042, 10769, 11231, 21538, 22462, 90869, 123541, 181738, 247082, 999559, 1999118, 10995149, 21990298]

約数ペア:

[(1, 21990298), (2, 10995149), (11, 1999118), (22, 999559), (89, 247082), (121, 181738), (178, 123541), (242, 90869), (979, 22462), (1021, 21538), (1958, 11231), (2042, 10769)]