21491176220

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{887}}^1\times {\mathrm{9539}}^1$

素因数の和:10562

約数の個数: 48

約数和(自身を含む): 45542891520

約数和(自身を除く): 24051715300

約数列:

[1, 2, 4, 5, 10, 20, 127, 254, 508, 635, 887, 1270, 1774, 2540, 3548, 4435, 8870, 9539, 17740, 19078, 38156, 47695, 95390, 112649, 190780, 225298, 450596, 563245, 1126490, 1211453, 2252980, 2422906, 4845812, 6057265, 8461093, 12114530, 16922186, 24229060, 33844372, 42305465, 84610930, 169221860, 1074558811, 2149117622, 4298235244, 5372794055, 10745588110, 21491176220]

約数ペア:

[(1, 21491176220), (2, 10745588110), (4, 5372794055), (5, 4298235244), (10, 2149117622), (20, 1074558811), (127, 169221860), (254, 84610930), (508, 42305465), (635, 33844372), (887, 24229060), (1270, 16922186), (1774, 12114530), (2540, 8461093), (3548, 6057265), (4435, 4845812), (8870, 2422906), (9539, 2252980), (17740, 1211453), (19078, 1126490), (38156, 563245), (47695, 450596), (95390, 225298), (112649, 190780)]