18840940

素因数分解:

$2^2\times 5^1\times {\mathrm{167}}^1\times {\mathrm{5641}}^1$

素因数の和:5817

約数の個数: 24

約数和(自身を含む): 39809952

約数和(自身を除く): 20969012

約数列:

[1, 2, 4, 5, 10, 20, 167, 334, 668, 835, 1670, 3340, 5641, 11282, 22564, 28205, 56410, 112820, 942047, 1884094, 3768188, 4710235, 9420470, 18840940]

約数ペア:

[(1, 18840940), (2, 9420470), (4, 4710235), (5, 3768188), (10, 1884094), (20, 942047), (167, 112820), (334, 56410), (668, 28205), (835, 22564), (1670, 11282), (3340, 5641)]