18990994

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{45433}}^1$

素因数の和:45465

約数の個数: 16

約数和(自身を含む): 32712480

約数和(自身を除く): 13721486

約数列:

[1, 2, 11, 19, 22, 38, 209, 418, 45433, 90866, 499763, 863227, 999526, 1726454, 9495497, 18990994]

約数ペア:

[(1, 18990994), (2, 9495497), (11, 1726454), (19, 999526), (22, 863227), (38, 499763), (209, 90866), (418, 45433)]