218156620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{991621}}^1$

素因数の和:991641

約数の個数: 24

約数和(自身を含む): 499777488

約数和(自身を除く): 281620868

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 991621, 1983242, 3966484, 4958105, 9916210, 10907831, 19832420, 21815662, 43631324, 54539155, 109078310, 218156620]

約数ペア:

[(1, 218156620), (2, 109078310), (4, 54539155), (5, 43631324), (10, 21815662), (11, 19832420), (20, 10907831), (22, 9916210), (44, 4958105), (55, 3966484), (110, 1983242), (220, 991621)]