639516892

素因数分解:

$2^2\times 7^1\times {\mathrm{157}}^1\times {\mathrm{145477}}^1$

素因数の和:145645

約数の個数: 24

約数和(自身を含む): 1287189344

約数和(自身を除く): 647672452

約数列:

[1, 2, 4, 7, 14, 28, 157, 314, 628, 1099, 2198, 4396, 145477, 290954, 581908, 1018339, 2036678, 4073356, 22839889, 45679778, 91359556, 159879223, 319758446, 639516892]

約数ペア:

[(1, 639516892), (2, 319758446), (4, 159879223), (7, 91359556), (14, 45679778), (28, 22839889), (157, 4073356), (314, 2036678), (628, 1018339), (1099, 581908), (2198, 290954), (4396, 145477)]