20746519808

素因数分解:

$2^8\times 7^1\times {\mathrm{499}}^1\times {\mathrm{23201}}^1$

素因数の和:23723

約数の個数: 72

約数和(自身を含む): 47424888000

約数和(自身を除く): 26678368192

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 256, 448, 499, 896, 998, 1792, 1996, 3493, 3992, 6986, 7984, 13972, 15968, 23201, 27944, 31936, 46402, 55888, 63872, 92804, 111776, 127744, 162407, 185608, 223552, 324814, 371216, 447104, 649628, 742432, 894208, 1299256, 1484864, 2598512, 2969728, 5197024, 5939456, 10394048, 11577299, 20788096, 23154598, 41576192, 46309196, 81041093, 92618392, 162082186, 185236784, 324164372, 370473568, 648328744, 740947136, 1296657488, 1481894272, 2593314976, 2963788544, 5186629952, 10373259904, 20746519808]

約数ペア:

[(1, 20746519808), (2, 10373259904), (4, 5186629952), (7, 2963788544), (8, 2593314976), (14, 1481894272), (16, 1296657488), (28, 740947136), (32, 648328744), (56, 370473568), (64, 324164372), (112, 185236784), (128, 162082186), (224, 92618392), (256, 81041093), (448, 46309196), (499, 41576192), (896, 23154598), (998, 20788096), (1792, 11577299), (1996, 10394048), (3493, 5939456), (3992, 5197024), (6986, 2969728), (7984, 2598512), (13972, 1484864), (15968, 1299256), (23201, 894208), (27944, 742432), (31936, 649628), (46402, 447104), (55888, 371216), (63872, 324814), (92804, 223552), (111776, 185608), (127744, 162407)]