81405926

素因数分解:

$2^1\times 7^1\times {\mathrm{2003}}^1\times {\mathrm{2903}}^1$

素因数の和:4915

約数の個数: 16

約数和(自身を含む): 139670784

約数和(自身を除く): 58264858

約数列:

[1, 2, 7, 14, 2003, 2903, 4006, 5806, 14021, 20321, 28042, 40642, 5814709, 11629418, 40702963, 81405926]

約数ペア:

[(1, 81405926), (2, 40702963), (7, 11629418), (14, 5814709), (2003, 40642), (2903, 28042), (4006, 20321), (5806, 14021)]