20198899

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{1151}}^1$

素因数の和:1290

約数の個数: 16

約数和(自身を含む): 24330240

約数和(自身を除く): 4131341

約数列:

[1, 7, 23, 109, 161, 763, 1151, 2507, 8057, 17549, 26473, 125459, 185311, 878213, 2885557, 20198899]

約数ペア:

[(1, 20198899), (7, 2885557), (23, 878213), (109, 185311), (161, 125459), (763, 26473), (1151, 17549), (2507, 8057)]