21728392

素因数分解:

$2^3\times 7^1\times {\mathrm{587}}^1\times {\mathrm{661}}^1$

素因数の和:1261

約数の個数: 32

約数和(自身を含む): 46710720

約数和(自身を除く): 24982328

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 587, 661, 1174, 1322, 2348, 2644, 4109, 4627, 4696, 5288, 8218, 9254, 16436, 18508, 32872, 37016, 388007, 776014, 1552028, 2716049, 3104056, 5432098, 10864196, 21728392]

約数ペア:

[(1, 21728392), (2, 10864196), (4, 5432098), (7, 3104056), (8, 2716049), (14, 1552028), (28, 776014), (56, 388007), (587, 37016), (661, 32872), (1174, 18508), (1322, 16436), (2348, 9254), (2644, 8218), (4109, 5288), (4627, 4696)]