21490884

素因数分解:

$2^2\times 3^2\times {\mathrm{43}}^1\times {\mathrm{13883}}^1$

素因数の和:13936

約数の個数: 36

約数和(自身を含む): 55591536

約数和(自身を除く): 34100652

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 43, 86, 129, 172, 258, 387, 516, 774, 1548, 13883, 27766, 41649, 55532, 83298, 124947, 166596, 249894, 499788, 596969, 1193938, 1790907, 2387876, 3581814, 5372721, 7163628, 10745442, 21490884]

約数ペア:

[(1, 21490884), (2, 10745442), (3, 7163628), (4, 5372721), (6, 3581814), (9, 2387876), (12, 1790907), (18, 1193938), (36, 596969), (43, 499788), (86, 249894), (129, 166596), (172, 124947), (258, 83298), (387, 55532), (516, 41649), (774, 27766), (1548, 13883)]