20702495

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{1801}}^1$

素因数の和:1847

約数の個数: 24

約数和(自身を含む): 28759920

約数和(自身を除く): 8057425

約数列:

[1, 5, 11, 19, 55, 95, 121, 209, 605, 1045, 1801, 2299, 9005, 11495, 19811, 34219, 99055, 171095, 217921, 376409, 1089605, 1882045, 4140499, 20702495]

約数ペア:

[(1, 20702495), (5, 4140499), (11, 1882045), (19, 1089605), (55, 376409), (95, 217921), (121, 171095), (209, 99055), (605, 34219), (1045, 19811), (1801, 11495), (2299, 9005)]