20980346

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1\times {\mathrm{107}}^1$

素因数の和:278

約数の個数: 32

約数和(自身を含む): 34525440

約数和(自身を除く): 13545094

約数列:

[1, 2, 17, 34, 73, 79, 107, 146, 158, 214, 1241, 1343, 1819, 2482, 2686, 3638, 5767, 7811, 8453, 11534, 15622, 16906, 98039, 132787, 143701, 196078, 265574, 287402, 617069, 1234138, 10490173, 20980346]

約数ペア:

[(1, 20980346), (2, 10490173), (17, 1234138), (34, 617069), (73, 287402), (79, 265574), (107, 196078), (146, 143701), (158, 132787), (214, 98039), (1241, 16906), (1343, 15622), (1819, 11534), (2482, 8453), (2686, 7811), (3638, 5767)]