212850020

素因数分解:

$2^2\times 5^1\times {\mathrm{10642501}}^1$

素因数の和:10642510

約数の個数: 12

約数和(自身を含む): 446985084

約数和(自身を除く): 234135064

約数列:

[1, 2, 4, 5, 10, 20, 10642501, 21285002, 42570004, 53212505, 106425010, 212850020]

約数ペア:

[(1, 212850020), (2, 106425010), (4, 53212505), (5, 42570004), (10, 21285002), (20, 10642501)]