20992959

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{59809}}^1$

素因数の和:59831

約数の個数: 16

約数和(自身を含む): 33493600

約数和(自身を除く): 12500641

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 59809, 179427, 538281, 777517, 1614843, 2332551, 6997653, 20992959]

約数ペア:

[(1, 20992959), (3, 6997653), (9, 2332551), (13, 1614843), (27, 777517), (39, 538281), (117, 179427), (351, 59809)]