20557988

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{9941}}^1$

素因数の和:10003

約数の個数: 24

約数和(自身を含む): 40086144

約数和(自身を除く): 19528156

約数列:

[1, 2, 4, 11, 22, 44, 47, 94, 188, 517, 1034, 2068, 9941, 19882, 39764, 109351, 218702, 437404, 467227, 934454, 1868908, 5139497, 10278994, 20557988]

約数ペア:

[(1, 20557988), (2, 10278994), (4, 5139497), (11, 1868908), (22, 934454), (44, 467227), (47, 437404), (94, 218702), (188, 109351), (517, 39764), (1034, 19882), (2068, 9941)]