21181556

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{293}}^1$

素因数の和:392

約数の個数: 48

約数和(自身を含む): 42674688

約数和(自身を除く): 21493132

約数列:

[1, 2, 4, 11, 22, 31, 44, 53, 62, 106, 124, 212, 293, 341, 583, 586, 682, 1166, 1172, 1364, 1643, 2332, 3223, 3286, 6446, 6572, 9083, 12892, 15529, 18073, 18166, 31058, 36146, 36332, 62116, 72292, 99913, 170819, 199826, 341638, 399652, 481399, 683276, 962798, 1925596, 5295389, 10590778, 21181556]

約数ペア:

[(1, 21181556), (2, 10590778), (4, 5295389), (11, 1925596), (22, 962798), (31, 683276), (44, 481399), (53, 399652), (62, 341638), (106, 199826), (124, 170819), (212, 99913), (293, 72292), (341, 62116), (583, 36332), (586, 36146), (682, 31058), (1166, 18166), (1172, 18073), (1364, 15529), (1643, 12892), (2332, 9083), (3223, 6572), (3286, 6446)]