21857716

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{2531}}^1$

素因数の和:2679

約数の個数: 24

約数和(自身を含む): 40836096

約数和(自身を除く): 18978380

約数列:

[1, 2, 4, 17, 34, 68, 127, 254, 508, 2159, 2531, 4318, 5062, 8636, 10124, 43027, 86054, 172108, 321437, 642874, 1285748, 5464429, 10928858, 21857716]

約数ペア:

[(1, 21857716), (2, 10928858), (4, 5464429), (17, 1285748), (34, 642874), (68, 321437), (127, 172108), (254, 86054), (508, 43027), (2159, 10124), (2531, 8636), (4318, 5062)]