21891880

素因数分解:

$2^3\times 5^1\times {\mathrm{227}}^1\times {\mathrm{2411}}^1$

素因数の和:2649

約数の個数: 32

約数和(自身を含む): 49494240

約数和(自身を除く): 27602360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 227, 454, 908, 1135, 1816, 2270, 2411, 4540, 4822, 9080, 9644, 12055, 19288, 24110, 48220, 96440, 547297, 1094594, 2189188, 2736485, 4378376, 5472970, 10945940, 21891880]

約数ペア:

[(1, 21891880), (2, 10945940), (4, 5472970), (5, 4378376), (8, 2736485), (10, 2189188), (20, 1094594), (40, 547297), (227, 96440), (454, 48220), (908, 24110), (1135, 19288), (1816, 12055), (2270, 9644), (2411, 9080), (4540, 4822)]