21815728

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{123953}}^1$

素因数の和:123972

約数の個数: 20

約数和(自身を含む): 46110888

約数和(自身を除く): 24295160

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 123953, 247906, 495812, 991624, 1363483, 1983248, 2726966, 5453932, 10907864, 21815728]

約数ペア:

[(1, 21815728), (2, 10907864), (4, 5453932), (8, 2726966), (11, 1983248), (16, 1363483), (22, 991624), (44, 495812), (88, 247906), (176, 123953)]