21637740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{157}}^1\times {\mathrm{2297}}^1$

素因数の和:2466

約数の個数: 48

約数和(自身を含む): 60998112

約数和(自身を除く): 39360372

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 157, 314, 471, 628, 785, 942, 1570, 1884, 2297, 2355, 3140, 4594, 4710, 6891, 9188, 9420, 11485, 13782, 22970, 27564, 34455, 45940, 68910, 137820, 360629, 721258, 1081887, 1442516, 1803145, 2163774, 3606290, 4327548, 5409435, 7212580, 10818870, 21637740]

約数ペア:

[(1, 21637740), (2, 10818870), (3, 7212580), (4, 5409435), (5, 4327548), (6, 3606290), (10, 2163774), (12, 1803145), (15, 1442516), (20, 1081887), (30, 721258), (60, 360629), (157, 137820), (314, 68910), (471, 45940), (628, 34455), (785, 27564), (942, 22970), (1570, 13782), (1884, 11485), (2297, 9420), (2355, 9188), (3140, 6891), (4594, 4710)]