20820644

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{367}}^1\times {\mathrm{1091}}^1$

素因数の和:1475

約数の個数: 24

約数和(自身を含む): 39381888

約数和(自身を除く): 18561244

約数列:

[1, 2, 4, 13, 26, 52, 367, 734, 1091, 1468, 2182, 4364, 4771, 9542, 14183, 19084, 28366, 56732, 400397, 800794, 1601588, 5205161, 10410322, 20820644]

約数ペア:

[(1, 20820644), (2, 10410322), (4, 5205161), (13, 1601588), (26, 800794), (52, 400397), (367, 56732), (734, 28366), (1091, 19084), (1468, 14183), (2182, 9542), (4364, 4771)]