4392380450020

素因数分解:

$2^2\times 5^1\times {\mathrm{219619022501}}^1$

素因数の和:219619022510

約数の個数: 12

約数和(自身を含む): 9223998945084

約数和(自身を除く): 4831618495064

約数列:

[1, 2, 4, 5, 10, 20, 219619022501, 439238045002, 878476090004, 1098095112505, 2196190225010, 4392380450020]

約数ペア:

[(1, 4392380450020), (2, 2196190225010), (4, 1098095112505), (5, 878476090004), (10, 439238045002), (20, 219619022501)]