21838970

素因数分解:

$2^1\times 5^1\times {\mathrm{397}}^1\times {\mathrm{5501}}^1$

素因数の和:5905

約数の個数: 16

約数和(自身を含む): 39416328

約数和(自身を除く): 17577358

約数列:

[1, 2, 5, 10, 397, 794, 1985, 3970, 5501, 11002, 27505, 55010, 2183897, 4367794, 10919485, 21838970]

約数ペア:

[(1, 21838970), (2, 10919485), (5, 4367794), (10, 2183897), (397, 55010), (794, 27505), (1985, 11002), (3970, 5501)]