18895521

素因数分解:

$3^1\times {\mathrm{113}}^1\times {\mathrm{139}}^1\times {\mathrm{401}}^1$

素因数の和:656

約数の個数: 16

約数和(自身を含む): 25663680

約数和(自身を除く): 6768159

約数列:

[1, 3, 113, 139, 339, 401, 417, 1203, 15707, 45313, 47121, 55739, 135939, 167217, 6298507, 18895521]

約数ペア:

[(1, 18895521), (3, 6298507), (113, 167217), (139, 135939), (339, 55739), (401, 47121), (417, 45313), (1203, 15707)]