21787216

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{123791}}^1$

素因数の和:123810

約数の個数: 20

約数和(自身を含む): 46050624

約数和(自身を除く): 24263408

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 123791, 247582, 495164, 990328, 1361701, 1980656, 2723402, 5446804, 10893608, 21787216]

約数ペア:

[(1, 21787216), (2, 10893608), (4, 5446804), (8, 2723402), (11, 1980656), (16, 1361701), (22, 990328), (44, 495164), (88, 247582), (176, 123791)]