18981814

素因数分解:

$2^1\times {\mathrm{37}}^1\times {\mathrm{199}}^1\times {\mathrm{1289}}^1$

素因数の和:1527

約数の個数: 16

約数和(自身を含む): 29412000

約数和(自身を除く): 10430186

約数列:

[1, 2, 37, 74, 199, 398, 1289, 2578, 7363, 14726, 47693, 95386, 256511, 513022, 9490907, 18981814]

約数ペア:

[(1, 18981814), (2, 9490907), (37, 513022), (74, 256511), (199, 95386), (398, 47693), (1289, 14726), (2578, 7363)]