21178386

素因数分解:

$2^1\times 3^2\times {\mathrm{41}}^1\times {\mathrm{28697}}^1$

素因数の和:28746

約数の個数: 24

約数和(自身を含む): 47007324

約数和(自身を除く): 25828938

約数列:

[1, 2, 3, 6, 9, 18, 41, 82, 123, 246, 369, 738, 28697, 57394, 86091, 172182, 258273, 516546, 1176577, 2353154, 3529731, 7059462, 10589193, 21178386]

約数ペア:

[(1, 21178386), (2, 10589193), (3, 7059462), (6, 3529731), (9, 2353154), (18, 1176577), (41, 516546), (82, 258273), (123, 172182), (246, 86091), (369, 57394), (738, 28697)]