18478659

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{7907}}^1$

素因数の和:7970

約数の個数: 16

約数和(自身を含む): 26570880

約数和(自身を除く): 8092221

約数列:

[1, 3, 19, 41, 57, 123, 779, 2337, 7907, 23721, 150233, 324187, 450699, 972561, 6159553, 18478659]

約数ペア:

[(1, 18478659), (3, 6159553), (19, 972561), (41, 450699), (57, 324187), (123, 150233), (779, 23721), (2337, 7907)]