21028894

素因数分解:

$2^1\times {\mathrm{157}}^1\times {\mathrm{193}}^1\times {\mathrm{347}}^1$

素因数の和:699

約数の個数: 16

約数和(自身を含む): 32000688

約数和(自身を除く): 10971794

約数列:

[1, 2, 157, 193, 314, 347, 386, 694, 30301, 54479, 60602, 66971, 108958, 133942, 10514447, 21028894]

約数ペア:

[(1, 21028894), (2, 10514447), (157, 133942), (193, 108958), (314, 66971), (347, 60602), (386, 54479), (694, 30301)]