18707993

素因数分解:

${\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1\times {\mathrm{149}}^1$

素因数の和:328

約数の個数: 16

約数和(自身を含む): 20217600

約数和(自身を除く): 1509607

約数列:

[1, 23, 53, 103, 149, 1219, 2369, 3427, 5459, 7897, 15347, 125557, 181631, 352981, 813391, 18707993]

約数ペア:

[(1, 18707993), (23, 813391), (53, 352981), (103, 181631), (149, 125557), (1219, 15347), (2369, 7897), (3427, 5459)]