20966275

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{239}}^1$

素因数の和:300

約数の個数: 36

約数和(自身を含む): 29685600

約数和(自身を除く): 8719325

約数列:

[1, 5, 11, 25, 29, 55, 121, 145, 239, 275, 319, 605, 725, 1195, 1595, 2629, 3025, 3509, 5975, 6931, 7975, 13145, 17545, 28919, 34655, 65725, 76241, 87725, 144595, 173275, 381205, 722975, 838651, 1906025, 4193255, 20966275]

約数ペア:

[(1, 20966275), (5, 4193255), (11, 1906025), (25, 838651), (29, 722975), (55, 381205), (121, 173275), (145, 144595), (239, 87725), (275, 76241), (319, 65725), (605, 34655), (725, 28919), (1195, 17545), (1595, 13145), (2629, 7975), (3025, 6931), (3509, 5975)]