81118990

素因数分解:

$2^1\times 5^1\times {\mathrm{239}}^1\times {\mathrm{33941}}^1$

素因数の和:34187

約数の個数: 16

約数和(自身を含む): 146629440

約数和(自身を除く): 65510450

約数列:

[1, 2, 5, 10, 239, 478, 1195, 2390, 33941, 67882, 169705, 339410, 8111899, 16223798, 40559495, 81118990]

約数ペア:

[(1, 81118990), (2, 40559495), (5, 16223798), (10, 8111899), (239, 339410), (478, 169705), (1195, 67882), (2390, 33941)]