20789084

素因数分解:

$2^2\times {\mathrm{71}}^2\times {\mathrm{1031}}^1$

素因数の和:1177

約数の個数: 18

約数和(自身を含む): 36936312

約数和(自身を除く): 16147228

約数列:

[1, 2, 4, 71, 142, 284, 1031, 2062, 4124, 5041, 10082, 20164, 73201, 146402, 292804, 5197271, 10394542, 20789084]

約数ペア:

[(1, 20789084), (2, 10394542), (4, 5197271), (71, 292804), (142, 146402), (284, 73201), (1031, 20164), (2062, 10082), (4124, 5041)]