18206780

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31391}}^1$

素因数の和:31429

約数の個数: 24

約数和(自身を含む): 39553920

約数和(自身を除く): 21347140

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 31391, 62782, 125564, 156955, 313910, 627820, 910339, 1820678, 3641356, 4551695, 9103390, 18206780]

約数ペア:

[(1, 18206780), (2, 9103390), (4, 4551695), (5, 3641356), (10, 1820678), (20, 910339), (29, 627820), (58, 313910), (116, 156955), (145, 125564), (290, 62782), (580, 31391)]