21457535

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{1223}}^1$

素因数の和:1279

約数の個数: 24

約数和(自身を含む): 29302560

約数和(自身を除く): 7845025

約数列:

[1, 5, 11, 29, 55, 121, 145, 319, 605, 1223, 1595, 3509, 6115, 13453, 17545, 35467, 67265, 147983, 177335, 390137, 739915, 1950685, 4291507, 21457535]

約数ペア:

[(1, 21457535), (5, 4291507), (11, 1950685), (29, 739915), (55, 390137), (121, 177335), (145, 147983), (319, 67265), (605, 35467), (1223, 17545), (1595, 13453), (3509, 6115)]