21284950

素因数分解:

$2^1\times 5^2\times {\mathrm{103}}^1\times {\mathrm{4133}}^1$

素因数の和:4248

約数の個数: 24

約数和(自身を含む): 39984048

約数和(自身を除く): 18699098

約数列:

[1, 2, 5, 10, 25, 50, 103, 206, 515, 1030, 2575, 4133, 5150, 8266, 20665, 41330, 103325, 206650, 425699, 851398, 2128495, 4256990, 10642475, 21284950]

約数ペア:

[(1, 21284950), (2, 10642475), (5, 4256990), (10, 2128495), (25, 851398), (50, 425699), (103, 206650), (206, 103325), (515, 41330), (1030, 20665), (2575, 8266), (4133, 5150)]