639632212

素因数分解:

$2^2\times {\mathrm{47}}^1\times {\mathrm{163}}^1\times {\mathrm{20873}}^1$

素因数の和:21087

約数の個数: 24

約数和(自身を含む): 1150240896

約数和(自身を除く): 510608684

約数列:

[1, 2, 4, 47, 94, 163, 188, 326, 652, 7661, 15322, 20873, 30644, 41746, 83492, 981031, 1962062, 3402299, 3924124, 6804598, 13609196, 159908053, 319816106, 639632212]

約数ペア:

[(1, 639632212), (2, 319816106), (4, 159908053), (47, 13609196), (94, 6804598), (163, 3924124), (188, 3402299), (326, 1962062), (652, 981031), (7661, 83492), (15322, 41746), (20873, 30644)]