21261436

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{17659}}^1$

素因数の和:17713

約数の個数: 24

約数和(自身を含む): 43514240

約数和(自身を除く): 22252804

約数列:

[1, 2, 4, 7, 14, 28, 43, 86, 172, 301, 602, 1204, 17659, 35318, 70636, 123613, 247226, 494452, 759337, 1518674, 3037348, 5315359, 10630718, 21261436]

約数ペア:

[(1, 21261436), (2, 10630718), (4, 5315359), (7, 3037348), (14, 1518674), (28, 759337), (43, 494452), (86, 247226), (172, 123613), (301, 70636), (602, 35318), (1204, 17659)]