21581966

素因数分解:

$2^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{17321}}^1$

素因数の和:17419

約数の個数: 16

約数和(自身を含む): 37415520

約数和(自身を除く): 15833554

約数列:

[1, 2, 7, 14, 89, 178, 623, 1246, 17321, 34642, 121247, 242494, 1541569, 3083138, 10790983, 21581966]

約数ペア:

[(1, 21581966), (2, 10790983), (7, 3083138), (14, 1541569), (89, 242494), (178, 121247), (623, 34642), (1246, 17321)]