21000481490

素因数分解:

$2^1\times 5^1\times {\mathrm{7741}}^1\times {\mathrm{271289}}^1$

素因数の和:279037

約数の個数: 16

約数和(自身を含む): 37805889240

約数和(自身を除く): 16805407750

約数列:

[1, 2, 5, 10, 7741, 15482, 38705, 77410, 271289, 542578, 1356445, 2712890, 2100048149, 4200096298, 10500240745, 21000481490]

約数ペア:

[(1, 21000481490), (2, 10500240745), (5, 4200096298), (10, 2100048149), (7741, 2712890), (15482, 1356445), (38705, 542578), (77410, 271289)]