891340

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1087}}^1$

素因数の和:1137

約数の個数: 24

約数和(自身を含む): 1919232

約数和(自身を除く): 1027892

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 1087, 2174, 4348, 5435, 10870, 21740, 44567, 89134, 178268, 222835, 445670, 891340]

約数ペア:

[(1, 891340), (2, 445670), (4, 222835), (5, 178268), (10, 89134), (20, 44567), (41, 21740), (82, 10870), (164, 5435), (205, 4348), (410, 2174), (820, 1087)]