21120836

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{480019}}^1$

素因数の和:480034

約数の個数: 12

約数和(自身を含む): 40321680

約数和(自身を除く): 19200844

約数列:

[1, 2, 4, 11, 22, 44, 480019, 960038, 1920076, 5280209, 10560418, 21120836]

約数ペア:

[(1, 21120836), (2, 10560418), (4, 5280209), (11, 1920076), (22, 960038), (44, 480019)]