221510020

素因数分解:

$2^2\times 5^1\times {\mathrm{11075501}}^1$

素因数の和:11075510

約数の個数: 12

約数和(自身を含む): 465171084

約数和(自身を除く): 243661064

約数列:

[1, 2, 4, 5, 10, 20, 11075501, 22151002, 44302004, 55377505, 110755010, 221510020]

約数ペア:

[(1, 221510020), (2, 110755010), (4, 55377505), (5, 44302004), (10, 22151002), (20, 11075501)]