21255836

素因数分解:

$2^2\times 7^1\times {\mathrm{379}}^1\times {\mathrm{2003}}^1$

素因数の和:2393

約数の個数: 24

約数和(自身を含む): 42645120

約数和(自身を除く): 21389284

約数列:

[1, 2, 4, 7, 14, 28, 379, 758, 1516, 2003, 2653, 4006, 5306, 8012, 10612, 14021, 28042, 56084, 759137, 1518274, 3036548, 5313959, 10627918, 21255836]

約数ペア:

[(1, 21255836), (2, 10627918), (4, 5313959), (7, 3036548), (14, 1518274), (28, 759137), (379, 56084), (758, 28042), (1516, 14021), (2003, 10612), (2653, 8012), (4006, 5306)]