18845816

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{331}}^1\times {\mathrm{647}}^1$

素因数の和:995

約数の個数: 32

約数和(自身を含む): 38724480

約数和(自身を除く): 19878664

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 331, 647, 662, 1294, 1324, 2588, 2648, 3641, 5176, 7117, 7282, 14234, 14564, 28468, 29128, 56936, 214157, 428314, 856628, 1713256, 2355727, 4711454, 9422908, 18845816]

約数ペア:

[(1, 18845816), (2, 9422908), (4, 4711454), (8, 2355727), (11, 1713256), (22, 856628), (44, 428314), (88, 214157), (331, 56936), (647, 29128), (662, 28468), (1294, 14564), (1324, 14234), (2588, 7282), (2648, 7117), (3641, 5176)]