19478518

素因数分解:

$2^1\times {\mathrm{109}}^1\times {\mathrm{199}}^1\times {\mathrm{449}}^1$

素因数の和:759

約数の個数: 16

約数和(自身を含む): 29700000

約数和(自身を除く): 10221482

約数列:

[1, 2, 109, 199, 218, 398, 449, 898, 21691, 43382, 48941, 89351, 97882, 178702, 9739259, 19478518]

約数ペア:

[(1, 19478518), (2, 9739259), (109, 178702), (199, 97882), (218, 89351), (398, 48941), (449, 43382), (898, 21691)]