19661620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89371}}^1$

素因数の和:89391

約数の個数: 24

約数和(自身を含む): 45043488

約数和(自身を除く): 25381868

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 89371, 178742, 357484, 446855, 893710, 983081, 1787420, 1966162, 3932324, 4915405, 9830810, 19661620]

約数ペア:

[(1, 19661620), (2, 9830810), (4, 4915405), (5, 3932324), (10, 1966162), (11, 1787420), (20, 983081), (22, 893710), (44, 446855), (55, 357484), (110, 178742), (220, 89371)]