81237020

素因数分解:

$2^2\times 5^1\times {\mathrm{1787}}^1\times {\mathrm{2273}}^1$

素因数の和:4069

約数の個数: 24

約数和(自身を含む): 170768304

約数和(自身を除く): 89531284

約数列:

[1, 2, 4, 5, 10, 20, 1787, 2273, 3574, 4546, 7148, 8935, 9092, 11365, 17870, 22730, 35740, 45460, 4061851, 8123702, 16247404, 20309255, 40618510, 81237020]

約数ペア:

[(1, 81237020), (2, 40618510), (4, 20309255), (5, 16247404), (10, 8123702), (20, 4061851), (1787, 45460), (2273, 35740), (3574, 22730), (4546, 17870), (7148, 11365), (8935, 9092)]