21120572

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{480013}}^1$

素因数の和:480028

約数の個数: 12

約数和(自身を含む): 40321176

約数和(自身を除く): 19200604

約数列:

[1, 2, 4, 11, 22, 44, 480013, 960026, 1920052, 5280143, 10560286, 21120572]

約数ペア:

[(1, 21120572), (2, 10560286), (4, 5280143), (11, 1920052), (22, 960026), (44, 480013)]