21120616

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{240007}}^1$

素因数の和:240024

約数の個数: 16

約数和(自身を含む): 43201440

約数和(自身を除く): 22080824

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 240007, 480014, 960028, 1920056, 2640077, 5280154, 10560308, 21120616]

約数ペア:

[(1, 21120616), (2, 10560308), (4, 5280154), (8, 2640077), (11, 1920056), (22, 960028), (44, 480014), (88, 240007)]