21640564

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{557}}^1\times {\mathrm{883}}^1$

素因数の和:1455

約数の個数: 24

約数和(自身を含む): 41434848

約数和(自身を除く): 19794284

約数列:

[1, 2, 4, 11, 22, 44, 557, 883, 1114, 1766, 2228, 3532, 6127, 9713, 12254, 19426, 24508, 38852, 491831, 983662, 1967324, 5410141, 10820282, 21640564]

約数ペア:

[(1, 21640564), (2, 10820282), (4, 5410141), (11, 1967324), (22, 983662), (44, 491831), (557, 38852), (883, 24508), (1114, 19426), (1766, 12254), (2228, 9713), (3532, 6127)]