865630160

素因数分解:

$2^4\times 5^1\times {\mathrm{10820377}}^1$

素因数の和:10820390

約数の個数: 20

約数和(自身を含む): 2012590308

約数和(自身を除く): 1146960148

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 10820377, 21640754, 43281508, 54101885, 86563016, 108203770, 173126032, 216407540, 432815080, 865630160]

約数ペア:

[(1, 865630160), (2, 432815080), (4, 216407540), (5, 173126032), (8, 108203770), (10, 86563016), (16, 54101885), (20, 43281508), (40, 21640754), (80, 10820377)]