291340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{2081}}^1$

素因数の和:2097

約数の個数: 24

約数和(自身を含む): 699552

約数和(自身を除く): 408212

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 2081, 4162, 8324, 10405, 14567, 20810, 29134, 41620, 58268, 72835, 145670, 291340]

約数ペア:

[(1, 291340), (2, 145670), (4, 72835), (5, 58268), (7, 41620), (10, 29134), (14, 20810), (20, 14567), (28, 10405), (35, 8324), (70, 4162), (140, 2081)]