21780232

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{143291}}^1$

素因数の和:143316

約数の個数: 16

約数和(自身を含む): 42987600

約数和(自身を除く): 21207368

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 143291, 286582, 573164, 1146328, 2722529, 5445058, 10890116, 21780232]

約数ペア:

[(1, 21780232), (2, 10890116), (4, 5445058), (8, 2722529), (19, 1146328), (38, 573164), (76, 286582), (152, 143291)]