71821340

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{87587}}^1$

素因数の和:87637

約数の個数: 24

約数和(自身を含む): 154505232

約数和(自身を除く): 82683892

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 87587, 175174, 350348, 437935, 875870, 1751740, 3591067, 7182134, 14364268, 17955335, 35910670, 71821340]

約数ペア:

[(1, 71821340), (2, 35910670), (4, 17955335), (5, 14364268), (10, 7182134), (20, 3591067), (41, 1751740), (82, 875870), (164, 437935), (205, 350348), (410, 175174), (820, 87587)]