21371207

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{751}}^1$

素因数の和:974

約数の個数: 16

約数和(自身を含む): 25267200

約数和(自身を除く): 3895993

約数列:

[1, 11, 13, 143, 199, 751, 2189, 2587, 8261, 9763, 28457, 107393, 149449, 1643939, 1942837, 21371207]

約数ペア:

[(1, 21371207), (11, 1942837), (13, 1643939), (143, 149449), (199, 107393), (751, 28457), (2189, 9763), (2587, 8261)]