18931340

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{23087}}^1$

素因数の和:23137

約数の個数: 24

約数和(自身を含む): 40727232

約数和(自身を除く): 21795892

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 23087, 46174, 92348, 115435, 230870, 461740, 946567, 1893134, 3786268, 4732835, 9465670, 18931340]

約数ペア:

[(1, 18931340), (2, 9465670), (4, 4732835), (5, 3786268), (10, 1893134), (20, 946567), (41, 461740), (82, 230870), (164, 115435), (205, 92348), (410, 46174), (820, 23087)]