21157809

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{5683}}^1$

素因数の和:5776

約数の個数: 16

約数和(自身を含む): 30284352

約数和(自身を除く): 9126543

約数列:

[1, 3, 17, 51, 73, 219, 1241, 3723, 5683, 17049, 96611, 289833, 414859, 1244577, 7052603, 21157809]

約数ペア:

[(1, 21157809), (3, 7052603), (17, 1244577), (51, 414859), (73, 289833), (219, 96611), (1241, 17049), (3723, 5683)]