19201820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{87281}}^1$

素因数の和:87301

約数の個数: 24

約数和(自身を含む): 43990128

約数和(自身を除く): 24788308

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 87281, 174562, 349124, 436405, 872810, 960091, 1745620, 1920182, 3840364, 4800455, 9600910, 19201820]

約数ペア:

[(1, 19201820), (2, 9600910), (4, 4800455), (5, 3840364), (10, 1920182), (11, 1745620), (20, 960091), (22, 872810), (44, 436405), (55, 349124), (110, 174562), (220, 87281)]