81581578

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{43}}^2\times {\mathrm{1697}}^1$

素因数の和:1798

約数の個数: 24

約数和(自身を含む): 135001188

約数和(自身を除く): 53419610

約数列:

[1, 2, 13, 26, 43, 86, 559, 1118, 1697, 1849, 3394, 3698, 22061, 24037, 44122, 48074, 72971, 145942, 948623, 1897246, 3137753, 6275506, 40790789, 81581578]

約数ペア:

[(1, 81581578), (2, 40790789), (13, 6275506), (26, 3137753), (43, 1897246), (86, 948623), (559, 145942), (1118, 72971), (1697, 48074), (1849, 44122), (3394, 24037), (3698, 22061)]