1328978

素因数分解:

$2^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{191}}^1$

素因数の和:278

約数の個数: 24

約数和(自身を含む): 2363904

約数和(自身を除く): 1034926

約数列:

[1, 2, 7, 14, 49, 71, 98, 142, 191, 382, 497, 994, 1337, 2674, 3479, 6958, 9359, 13561, 18718, 27122, 94927, 189854, 664489, 1328978]

約数ペア:

[(1, 1328978), (2, 664489), (7, 189854), (14, 94927), (49, 27122), (71, 18718), (98, 13561), (142, 9359), (191, 6958), (382, 3479), (497, 2674), (994, 1337)]