81191020

素因数分解:

$2^2\times 5^1\times {\mathrm{769}}^1\times {\mathrm{5279}}^1$

素因数の和:6057

約数の個数: 24

約数和(自身を含む): 170755200

約数和(自身を除く): 89564180

約数列:

[1, 2, 4, 5, 10, 20, 769, 1538, 3076, 3845, 5279, 7690, 10558, 15380, 21116, 26395, 52790, 105580, 4059551, 8119102, 16238204, 20297755, 40595510, 81191020]

約数ペア:

[(1, 81191020), (2, 40595510), (4, 20297755), (5, 16238204), (10, 8119102), (20, 4059551), (769, 105580), (1538, 52790), (3076, 26395), (3845, 21116), (5279, 15380), (7690, 10558)]