202010020

素因数分解:

$2^2\times 5^1\times {\mathrm{10100501}}^1$

素因数の和:10100510

約数の個数: 12

約数和(自身を含む): 424221084

約数和(自身を除く): 222211064

約数列:

[1, 2, 4, 5, 10, 20, 10100501, 20201002, 40402004, 50502505, 101005010, 202010020]

約数ペア:

[(1, 202010020), (2, 101005010), (4, 50502505), (5, 40402004), (10, 20201002), (20, 10100501)]