639564

素因数分解:

$2^2\times 3^1\times {\mathrm{223}}^1\times {\mathrm{239}}^1$

素因数の和:469

約数の個数: 24

約数和(自身を含む): 1505280

約数和(自身を除く): 865716

約数列:

[1, 2, 3, 4, 6, 12, 223, 239, 446, 478, 669, 717, 892, 956, 1338, 1434, 2676, 2868, 53297, 106594, 159891, 213188, 319782, 639564]

約数ペア:

[(1, 639564), (2, 319782), (3, 213188), (4, 159891), (6, 106594), (12, 53297), (223, 2868), (239, 2676), (446, 1434), (478, 1338), (669, 956), (717, 892)]