21836256490

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{27640831}}^1$

素因数の和:27640917

約数の個数: 16

約数和(自身を含む): 39802798080

約数和(自身を除く): 17966541590

約数列:

[1, 2, 5, 10, 79, 158, 395, 790, 27640831, 55281662, 138204155, 276408310, 2183625649, 4367251298, 10918128245, 21836256490]

約数ペア:

[(1, 21836256490), (2, 10918128245), (5, 4367251298), (10, 2183625649), (79, 276408310), (158, 138204155), (395, 55281662), (790, 27640831)]