20724495

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1$

素因数の和:212

約数の個数: 64

約数和(自身を含む): 38928384

約数和(自身を除く): 18203889

約数列:

[1, 3, 5, 11, 15, 23, 33, 43, 55, 69, 115, 127, 129, 165, 215, 253, 345, 381, 473, 635, 645, 759, 989, 1265, 1397, 1419, 1905, 2365, 2921, 2967, 3795, 4191, 4945, 5461, 6985, 7095, 8763, 10879, 14605, 14835, 16383, 20955, 27305, 32131, 32637, 43815, 54395, 60071, 81915, 96393, 125603, 160655, 163185, 180213, 300355, 376809, 481965, 628015, 901065, 1381633, 1884045, 4144899, 6908165, 20724495]

約数ペア:

[(1, 20724495), (3, 6908165), (5, 4144899), (11, 1884045), (15, 1381633), (23, 901065), (33, 628015), (43, 481965), (55, 376809), (69, 300355), (115, 180213), (127, 163185), (129, 160655), (165, 125603), (215, 96393), (253, 81915), (345, 60071), (381, 54395), (473, 43815), (635, 32637), (645, 32131), (759, 27305), (989, 20955), (1265, 16383), (1397, 14835), (1419, 14605), (1905, 10879), (2365, 8763), (2921, 7095), (2967, 6985), (3795, 5461), (4191, 4945)]