21279445

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{421}}^1\times {\mathrm{919}}^1$

素因数の和:1356

約数の個数: 16

約数和(自身を含む): 27953280

約数和(自身を除く): 6673835

約数列:

[1, 5, 11, 55, 421, 919, 2105, 4595, 4631, 10109, 23155, 50545, 386899, 1934495, 4255889, 21279445]

約数ペア:

[(1, 21279445), (5, 4255889), (11, 1934495), (55, 386899), (421, 50545), (919, 23155), (2105, 10109), (4595, 4631)]