21251864

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{1279}}^1$

素因数の和:1383

約数の個数: 32

約数和(自身を含む): 41779200

約数和(自身を除く): 20527336

約数列:

[1, 2, 4, 8, 31, 62, 67, 124, 134, 248, 268, 536, 1279, 2077, 2558, 4154, 5116, 8308, 10232, 16616, 39649, 79298, 85693, 158596, 171386, 317192, 342772, 685544, 2656483, 5312966, 10625932, 21251864]

約数ペア:

[(1, 21251864), (2, 10625932), (4, 5312966), (8, 2656483), (31, 685544), (62, 342772), (67, 317192), (124, 171386), (134, 158596), (248, 85693), (268, 79298), (536, 39649), (1279, 16616), (2077, 10232), (2558, 8308), (4154, 5116)]