20917533

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{397}}^1$

素因数の和:613

約数の個数: 32

約数和(自身を含む): 34590976

約数和(自身を除く): 13673443

約数列:

[1, 3, 7, 13, 21, 39, 91, 193, 273, 397, 579, 1191, 1351, 2509, 2779, 4053, 5161, 7527, 8337, 15483, 17563, 36127, 52689, 76621, 108381, 229863, 536347, 996073, 1609041, 2988219, 6972511, 20917533]

約数ペア:

[(1, 20917533), (3, 6972511), (7, 2988219), (13, 1609041), (21, 996073), (39, 536347), (91, 229863), (193, 108381), (273, 76621), (397, 52689), (579, 36127), (1191, 17563), (1351, 15483), (2509, 8337), (2779, 7527), (4053, 5161)]