20200100

素因数分解:

$2^2\times 5^2\times {\mathrm{202001}}^1$

素因数の和:202015

約数の個数: 18

約数和(自身を含む): 43834434

約数和(自身を除く): 23634334

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 202001, 404002, 808004, 1010005, 2020010, 4040020, 5050025, 10100050, 20200100]

約数ペア:

[(1, 20200100), (2, 10100050), (4, 5050025), (5, 4040020), (10, 2020010), (20, 1010005), (25, 808004), (50, 404002), (100, 202001)]