20651535

素因数分解:

$3^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{4289}}^1$

素因数の和:4407

約数の個数: 24

約数和(自身を含む): 36138960

約数和(自身を除く): 15487425

約数列:

[1, 3, 5, 9, 15, 45, 107, 321, 535, 963, 1605, 4289, 4815, 12867, 21445, 38601, 64335, 193005, 458923, 1376769, 2294615, 4130307, 6883845, 20651535]

約数ペア:

[(1, 20651535), (3, 6883845), (5, 4130307), (9, 2294615), (15, 1376769), (45, 458923), (107, 193005), (321, 64335), (535, 38601), (963, 21445), (1605, 12867), (4289, 4815)]