639779964

素因数分解:

$2^2\times 3^1\times {\mathrm{107}}^1\times {\mathrm{498271}}^1$

素因数の和:498385

約数の個数: 24

約数和(自身を含む): 1506774528

約数和(自身を除く): 866994564

約数列:

[1, 2, 3, 4, 6, 12, 107, 214, 321, 428, 642, 1284, 498271, 996542, 1494813, 1993084, 2989626, 5979252, 53314997, 106629994, 159944991, 213259988, 319889982, 639779964]

約数ペア:

[(1, 639779964), (2, 319889982), (3, 213259988), (4, 159944991), (6, 106629994), (12, 53314997), (107, 5979252), (214, 2989626), (321, 1993084), (428, 1494813), (642, 996542), (1284, 498271)]