1816180

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1279}}^1$

素因数の和:1359

約数の個数: 24

約数和(自身を含む): 3870720

約数和(自身を除く): 2054540

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1279, 1420, 2558, 5116, 6395, 12790, 25580, 90809, 181618, 363236, 454045, 908090, 1816180]

約数ペア:

[(1, 1816180), (2, 908090), (4, 454045), (5, 363236), (10, 181618), (20, 90809), (71, 25580), (142, 12790), (284, 6395), (355, 5116), (710, 2558), (1279, 1420)]