21491950

素因数分解:

$2^1\times 5^2\times {\mathrm{79}}^1\times {\mathrm{5441}}^1$

素因数の和:5532

約数の個数: 24

約数和(自身を含む): 40488480

約数和(自身を除く): 18996530

約数列:

[1, 2, 5, 10, 25, 50, 79, 158, 395, 790, 1975, 3950, 5441, 10882, 27205, 54410, 136025, 272050, 429839, 859678, 2149195, 4298390, 10745975, 21491950]

約数ペア:

[(1, 21491950), (2, 10745975), (5, 4298390), (10, 2149195), (25, 859678), (50, 429839), (79, 272050), (158, 136025), (395, 54410), (790, 27205), (1975, 10882), (3950, 5441)]