21284350

素因数分解:

$2^1\times 5^2\times {\mathrm{89}}^1\times {\mathrm{4783}}^1$

素因数の和:4884

約数の個数: 24

約数和(自身を含む): 40042080

約数和(自身を除く): 18757730

約数列:

[1, 2, 5, 10, 25, 50, 89, 178, 445, 890, 2225, 4450, 4783, 9566, 23915, 47830, 119575, 239150, 425687, 851374, 2128435, 4256870, 10642175, 21284350]

約数ペア:

[(1, 21284350), (2, 10642175), (5, 4256870), (10, 2128435), (25, 851374), (50, 425687), (89, 239150), (178, 119575), (445, 47830), (890, 23915), (2225, 9566), (4450, 4783)]