20178880010

素因数分解:

$2^1\times 5^1\times {\mathrm{1009}}^1\times {\mathrm{1999889}}^1$

素因数の和:2000905

約数の個数: 16

約数和(自身を含む): 36358000200

約数和(自身を除く): 16179120190

約数列:

[1, 2, 5, 10, 1009, 2018, 5045, 10090, 1999889, 3999778, 9999445, 19998890, 2017888001, 4035776002, 10089440005, 20178880010]

約数ペア:

[(1, 20178880010), (2, 10089440005), (5, 4035776002), (10, 2017888001), (1009, 19998890), (2018, 9999445), (5045, 3999778), (10090, 1999889)]