81422020

素因数分解:

$2^2\times 5^1\times {\mathrm{881}}^1\times {\mathrm{4621}}^1$

素因数の和:5511

約数の個数: 24

約数和(自身を含む): 171217368

約数和(自身を除く): 89795348

約数列:

[1, 2, 4, 5, 10, 20, 881, 1762, 3524, 4405, 4621, 8810, 9242, 17620, 18484, 23105, 46210, 92420, 4071101, 8142202, 16284404, 20355505, 40711010, 81422020]

約数ペア:

[(1, 81422020), (2, 40711010), (4, 20355505), (5, 16284404), (10, 8142202), (20, 4071101), (881, 92420), (1762, 46210), (3524, 23105), (4405, 18484), (4621, 17620), (8810, 9242)]