3949420

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{1091}}^1$

素因数の和:1281

約数の個数: 24

約数和(自身を含む): 8347248

約数和(自身を除く): 4397828

約数列:

[1, 2, 4, 5, 10, 20, 181, 362, 724, 905, 1091, 1810, 2182, 3620, 4364, 5455, 10910, 21820, 197471, 394942, 789884, 987355, 1974710, 3949420]

約数ペア:

[(1, 3949420), (2, 1974710), (4, 987355), (5, 789884), (10, 394942), (20, 197471), (181, 21820), (362, 10910), (724, 5455), (905, 4364), (1091, 3620), (1810, 2182)]