28202990

素因数分解:

$2^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{21529}}^1$

素因数の和:21667

約数の個数: 16

約数和(自身を含む): 51155280

約数和(自身を除く): 22952290

約数列:

[1, 2, 5, 10, 131, 262, 655, 1310, 21529, 43058, 107645, 215290, 2820299, 5640598, 14101495, 28202990]

約数ペア:

[(1, 28202990), (2, 14101495), (5, 5640598), (10, 2820299), (131, 215290), (262, 107645), (655, 43058), (1310, 21529)]