18706864

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{677}}^1$

素因数の和:853

約数の個数: 40

約数和(自身を含む): 39850128

約数和(自身を除く): 21143264

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 157, 176, 314, 628, 677, 1256, 1354, 1727, 2512, 2708, 3454, 5416, 6908, 7447, 10832, 13816, 14894, 27632, 29788, 59576, 106289, 119152, 212578, 425156, 850312, 1169179, 1700624, 2338358, 4676716, 9353432, 18706864]

約数ペア:

[(1, 18706864), (2, 9353432), (4, 4676716), (8, 2338358), (11, 1700624), (16, 1169179), (22, 850312), (44, 425156), (88, 212578), (157, 119152), (176, 106289), (314, 59576), (628, 29788), (677, 27632), (1256, 14894), (1354, 13816), (1727, 10832), (2512, 7447), (2708, 6908), (3454, 5416)]