21279496

素因数分解:

$2^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{8837}}^1$

素因数の和:8893

約数の個数: 32

約数和(自身を含む): 46664640

約数和(自身を除く): 25385144

約数列:

[1, 2, 4, 7, 8, 14, 28, 43, 56, 86, 172, 301, 344, 602, 1204, 2408, 8837, 17674, 35348, 61859, 70696, 123718, 247436, 379991, 494872, 759982, 1519964, 2659937, 3039928, 5319874, 10639748, 21279496]

約数ペア:

[(1, 21279496), (2, 10639748), (4, 5319874), (7, 3039928), (8, 2659937), (14, 1519964), (28, 759982), (43, 494872), (56, 379991), (86, 247436), (172, 123718), (301, 70696), (344, 61859), (602, 35348), (1204, 17674), (2408, 8837)]