18760755

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1$

素因数の和:180

約数の個数: 64

約数和(自身を含む): 34836480

約数和(自身を除く): 16075725

約数列:

[1, 3, 5, 13, 15, 23, 39, 47, 65, 69, 89, 115, 141, 195, 235, 267, 299, 345, 445, 611, 705, 897, 1081, 1157, 1335, 1495, 1833, 2047, 3055, 3243, 3471, 4183, 4485, 5405, 5785, 6141, 9165, 10235, 12549, 14053, 16215, 17355, 20915, 26611, 30705, 42159, 54379, 62745, 70265, 79833, 96209, 133055, 163137, 210795, 271895, 288627, 399165, 481045, 815685, 1250717, 1443135, 3752151, 6253585, 18760755]

約数ペア:

[(1, 18760755), (3, 6253585), (5, 3752151), (13, 1443135), (15, 1250717), (23, 815685), (39, 481045), (47, 399165), (65, 288627), (69, 271895), (89, 210795), (115, 163137), (141, 133055), (195, 96209), (235, 79833), (267, 70265), (299, 62745), (345, 54379), (445, 42159), (611, 30705), (705, 26611), (897, 20915), (1081, 17355), (1157, 16215), (1335, 14053), (1495, 12549), (1833, 10235), (2047, 9165), (3055, 6141), (3243, 5785), (3471, 5405), (4183, 4485)]