21167275

素因数分解:

$5^2\times {\mathrm{41}}^1\times {\mathrm{107}}^1\times {\mathrm{193}}^1$

素因数の和:351

約数の個数: 24

約数和(自身を含む): 27279504

約数和(自身を除く): 6112229

約数列:

[1, 5, 25, 41, 107, 193, 205, 535, 965, 1025, 2675, 4387, 4825, 7913, 20651, 21935, 39565, 103255, 109675, 197825, 516275, 846691, 4233455, 21167275]

約数ペア:

[(1, 21167275), (5, 4233455), (25, 846691), (41, 516275), (107, 197825), (193, 109675), (205, 103255), (535, 39565), (965, 21935), (1025, 20651), (2675, 7913), (4387, 4825)]