20728064

素因数分解:

$2^8\times 7^1\times {\mathrm{43}}^1\times {\mathrm{269}}^1$

素因数の和:335

約数の個数: 72

約数和(自身を含む): 48565440

約数和(自身を除く): 27837376

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 43, 56, 64, 86, 112, 128, 172, 224, 256, 269, 301, 344, 448, 538, 602, 688, 896, 1076, 1204, 1376, 1792, 1883, 2152, 2408, 2752, 3766, 4304, 4816, 5504, 7532, 8608, 9632, 11008, 11567, 15064, 17216, 19264, 23134, 30128, 34432, 38528, 46268, 60256, 68864, 77056, 80969, 92536, 120512, 161938, 185072, 241024, 323876, 370144, 482048, 647752, 740288, 1295504, 1480576, 2591008, 2961152, 5182016, 10364032, 20728064]

約数ペア:

[(1, 20728064), (2, 10364032), (4, 5182016), (7, 2961152), (8, 2591008), (14, 1480576), (16, 1295504), (28, 740288), (32, 647752), (43, 482048), (56, 370144), (64, 323876), (86, 241024), (112, 185072), (128, 161938), (172, 120512), (224, 92536), (256, 80969), (269, 77056), (301, 68864), (344, 60256), (448, 46268), (538, 38528), (602, 34432), (688, 30128), (896, 23134), (1076, 19264), (1204, 17216), (1376, 15064), (1792, 11567), (1883, 11008), (2152, 9632), (2408, 8608), (2752, 7532), (3766, 5504), (4304, 4816)]