2199778990

素因数分解:

$2^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{2177999}}^1$

素因数の和:2178107

約数の個数: 16

約数和(自身を含む): 3998808000

約数和(自身を除く): 1799029010

約数列:

[1, 2, 5, 10, 101, 202, 505, 1010, 2177999, 4355998, 10889995, 21779990, 219977899, 439955798, 1099889495, 2199778990]

約数ペア:

[(1, 2199778990), (2, 1099889495), (5, 439955798), (10, 219977899), (101, 21779990), (202, 10889995), (505, 4355998), (1010, 2177999)]