21241165

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{2819}}^1$

素因数の和:2972

約数の個数: 16

約数和(自身を含む): 28019520

約数和(自身を除く): 6778355

約数列:

[1, 5, 11, 55, 137, 685, 1507, 2819, 7535, 14095, 31009, 155045, 386203, 1931015, 4248233, 21241165]

約数ペア:

[(1, 21241165), (5, 4248233), (11, 1931015), (55, 386203), (137, 155045), (685, 31009), (1507, 14095), (2819, 7535)]