20917351

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{4337}}^1$

素因数の和:4410

約数の個数: 16

約数和(自身を含む): 26236224

約数和(自身を除く): 5318873

約数列:

[1, 7, 13, 53, 91, 371, 689, 4337, 4823, 30359, 56381, 229861, 394667, 1609027, 2988193, 20917351]

約数ペア:

[(1, 20917351), (7, 2988193), (13, 1609027), (53, 394667), (91, 229861), (371, 56381), (689, 30359), (4337, 4823)]