81121615

素因数分解:

$5^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1\times {\mathrm{2039}}^1$

素因数の和:2226

約数の個数: 16

約数和(自身を含む): 99633600

約数和(自身を除く): 18511985

約数列:

[1, 5, 73, 109, 365, 545, 2039, 7957, 10195, 39785, 148847, 222251, 744235, 1111255, 16224323, 81121615]

約数ペア:

[(1, 81121615), (5, 16224323), (73, 1111255), (109, 744235), (365, 222251), (545, 148847), (2039, 39785), (7957, 10195)]