28555569

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{127}}^1$

素因数の和:266

約数の個数: 48

約数和(自身を含む): 49201152

約数和(自身を除く): 20645583

約数列:

[1, 3, 7, 9, 21, 43, 63, 83, 127, 129, 249, 301, 381, 387, 581, 747, 889, 903, 1143, 1743, 2667, 2709, 3569, 5229, 5461, 8001, 10541, 10707, 16383, 24983, 31623, 32121, 38227, 49149, 73787, 74949, 94869, 114681, 221361, 224847, 344043, 453263, 664083, 1359789, 3172841, 4079367, 9518523, 28555569]

約数ペア:

[(1, 28555569), (3, 9518523), (7, 4079367), (9, 3172841), (21, 1359789), (43, 664083), (63, 453263), (83, 344043), (127, 224847), (129, 221361), (249, 114681), (301, 94869), (381, 74949), (387, 73787), (581, 49149), (747, 38227), (889, 32121), (903, 31623), (1143, 24983), (1743, 16383), (2667, 10707), (2709, 10541), (3569, 8001), (5229, 5461)]