21255389

素因数分解:

${\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1\times {\mathrm{199}}^1$

素因数の和:380

約数の個数: 16

約数和(自身を含む): 23212800

約数和(自身を除く): 1957411

約数列:

[1, 17, 61, 103, 199, 1037, 1751, 3383, 6283, 12139, 20497, 106811, 206363, 348449, 1250317, 21255389]

約数ペア:

[(1, 21255389), (17, 1250317), (61, 348449), (103, 206363), (199, 106811), (1037, 20497), (1751, 12139), (3383, 6283)]