20821438

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{97}}^1\times {\mathrm{887}}^1$

素因数の和:1008

約数の個数: 24

約数和(自身を含む): 34722576

約数和(自身を除く): 13901138

約数列:

[1, 2, 11, 22, 97, 121, 194, 242, 887, 1067, 1774, 2134, 9757, 11737, 19514, 23474, 86039, 107327, 172078, 214654, 946429, 1892858, 10410719, 20821438]

約数ペア:

[(1, 20821438), (2, 10410719), (11, 1892858), (22, 946429), (97, 214654), (121, 172078), (194, 107327), (242, 86039), (887, 23474), (1067, 19514), (1774, 11737), (2134, 9757)]