21128272

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{120047}}^1$

素因数の和:120066

約数の個数: 20

約数和(自身を含む): 44657856

約数和(自身を除く): 23529584

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 120047, 240094, 480188, 960376, 1320517, 1920752, 2641034, 5282068, 10564136, 21128272]

約数ペア:

[(1, 21128272), (2, 10564136), (4, 5282068), (8, 2641034), (11, 1920752), (16, 1320517), (22, 960376), (44, 480188), (88, 240094), (176, 120047)]