20216259

素因数分解:

$3^2\times 7^1\times {\mathrm{107}}^1\times {\mathrm{2999}}^1$

素因数の和:3119

約数の個数: 24

約数和(自身を含む): 33696000

約数和(自身を除く): 13479741

約数列:

[1, 3, 7, 9, 21, 63, 107, 321, 749, 963, 2247, 2999, 6741, 8997, 20993, 26991, 62979, 188937, 320893, 962679, 2246251, 2888037, 6738753, 20216259]

約数ペア:

[(1, 20216259), (3, 6738753), (7, 2888037), (9, 2246251), (21, 962679), (63, 320893), (107, 188937), (321, 62979), (749, 26991), (963, 20993), (2247, 8997), (2999, 6741)]