20391616

素因数分解:

$2^6\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1979}}^1$

素因数の和:2021

約数の個数: 56

約数和(自身を含む): 48280320

約数和(自身を除く): 27888704

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 32, 46, 56, 64, 92, 112, 161, 184, 224, 322, 368, 448, 644, 736, 1288, 1472, 1979, 2576, 3958, 5152, 7916, 10304, 13853, 15832, 27706, 31664, 45517, 55412, 63328, 91034, 110824, 126656, 182068, 221648, 318619, 364136, 443296, 637238, 728272, 886592, 1274476, 1456544, 2548952, 2913088, 5097904, 10195808, 20391616]

約数ペア:

[(1, 20391616), (2, 10195808), (4, 5097904), (7, 2913088), (8, 2548952), (14, 1456544), (16, 1274476), (23, 886592), (28, 728272), (32, 637238), (46, 443296), (56, 364136), (64, 318619), (92, 221648), (112, 182068), (161, 126656), (184, 110824), (224, 91034), (322, 63328), (368, 55412), (448, 45517), (644, 31664), (736, 27706), (1288, 15832), (1472, 13853), (1979, 10304), (2576, 7916), (3958, 5152)]