639346948

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{229321}}^1$

素因数の和:229383

約数の個数: 24

約数和(自身を含む): 1213572024

約数和(自身を除く): 574225076

約数列:

[1, 2, 4, 17, 34, 41, 68, 82, 164, 697, 1394, 2788, 229321, 458642, 917284, 3898457, 7796914, 9402161, 15593828, 18804322, 37608644, 159836737, 319673474, 639346948]

約数ペア:

[(1, 639346948), (2, 319673474), (4, 159836737), (17, 37608644), (34, 18804322), (41, 15593828), (68, 9402161), (82, 7796914), (164, 3898457), (697, 917284), (1394, 458642), (2788, 229321)]