28218001

素因数分解:

$7^1\times {\mathrm{47}}^1\times {\mathrm{199}}^1\times {\mathrm{431}}^1$

素因数の和:684

約数の個数: 16

約数和(自身を含む): 33177600

約数和(自身を除く): 4959599

約数列:

[1, 7, 47, 199, 329, 431, 1393, 3017, 9353, 20257, 65471, 85769, 141799, 600383, 4031143, 28218001]

約数ペア:

[(1, 28218001), (7, 4031143), (47, 600383), (199, 141799), (329, 85769), (431, 65471), (1393, 20257), (3017, 9353)]