685909090

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1672949}}^1$

素因数の和:1672997

約数の個数: 16

約数和(自身を含む): 1264750200

約数和(自身を除く): 578841110

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 1672949, 3345898, 8364745, 16729490, 68590909, 137181818, 342954545, 685909090]

約数ペア:

[(1, 685909090), (2, 342954545), (5, 137181818), (10, 68590909), (41, 16729490), (82, 8364745), (205, 3345898), (410, 1672949)]