18193973

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{199}}^1\times {\mathrm{353}}^1$

素因数の和:596

約数の個数: 16

約数和(自身を含む): 21523200

約数和(自身を除く): 3329227

約数列:

[1, 7, 37, 199, 259, 353, 1393, 2471, 7363, 13061, 51541, 70247, 91427, 491729, 2599139, 18193973]

約数ペア:

[(1, 18193973), (7, 2599139), (37, 491729), (199, 91427), (259, 70247), (353, 51541), (1393, 13061), (2471, 7363)]