4398020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19991}}^1$

素因数の和:20011

約数の個数: 24

約数和(自身を含む): 10075968

約数和(自身を除く): 5677948

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 19991, 39982, 79964, 99955, 199910, 219901, 399820, 439802, 879604, 1099505, 2199010, 4398020]

約数ペア:

[(1, 4398020), (2, 2199010), (4, 1099505), (5, 879604), (10, 439802), (11, 399820), (20, 219901), (22, 199910), (44, 99955), (55, 79964), (110, 39982), (220, 19991)]