21182788

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{431}}^1\times {\mathrm{1117}}^1$

素因数の和:1563

約数の個数: 24

約数和(自身を含む): 40569984

約数和(自身を除く): 19387196

約数列:

[1, 2, 4, 11, 22, 44, 431, 862, 1117, 1724, 2234, 4468, 4741, 9482, 12287, 18964, 24574, 49148, 481427, 962854, 1925708, 5295697, 10591394, 21182788]

約数ペア:

[(1, 21182788), (2, 10591394), (4, 5295697), (11, 1925708), (22, 962854), (44, 481427), (431, 49148), (862, 24574), (1117, 18964), (1724, 12287), (2234, 9482), (4468, 4741)]