18998785

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{7129}}^1$

素因数の和:7188

約数の個数: 16

約数和(自身を含む): 25154640

約数和(自身を除く): 6155855

約数列:

[1, 5, 13, 41, 65, 205, 533, 2665, 7129, 35645, 92677, 292289, 463385, 1461445, 3799757, 18998785]

約数ペア:

[(1, 18998785), (5, 3799757), (13, 1461445), (41, 463385), (65, 292289), (205, 92677), (533, 35645), (2665, 7129)]