19984816

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{23567}}^1$

素因数の和:23628

約数の個数: 20

約数和(自身を含む): 39452832

約数和(自身を除く): 19468016

約数列:

[1, 2, 4, 8, 16, 53, 106, 212, 424, 848, 23567, 47134, 94268, 188536, 377072, 1249051, 2498102, 4996204, 9992408, 19984816]

約数ペア:

[(1, 19984816), (2, 9992408), (4, 4996204), (8, 2498102), (16, 1249051), (53, 377072), (106, 188536), (212, 94268), (424, 47134), (848, 23567)]