21071545

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{1201}}^1$

素因数の和:1257

約数の個数: 24

約数和(自身を含む): 28775880

約数和(自身を除く): 7704335

約数列:

[1, 5, 11, 29, 55, 121, 145, 319, 605, 1201, 1595, 3509, 6005, 13211, 17545, 34829, 66055, 145321, 174145, 383119, 726605, 1915595, 4214309, 21071545]

約数ペア:

[(1, 21071545), (5, 4214309), (11, 1915595), (29, 726605), (55, 383119), (121, 174145), (145, 145321), (319, 66055), (605, 34829), (1201, 17545), (1595, 13211), (3509, 6005)]