19939959

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{56809}}^1$

素因数の和:56831

約数の個数: 16

約数和(自身を含む): 31813600

約数和(自身を除く): 11873641

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 56809, 170427, 511281, 738517, 1533843, 2215551, 6646653, 19939959]

約数ペア:

[(1, 19939959), (3, 6646653), (9, 2215551), (13, 1533843), (27, 738517), (39, 511281), (117, 170427), (351, 56809)]