21965217

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{4153}}^1$

素因数の和:4240

約数の個数: 16

約数和(自身を含む): 30706368

約数和(自身を除く): 8741151

約数列:

[1, 3, 41, 43, 123, 129, 1763, 4153, 5289, 12459, 170273, 178579, 510819, 535737, 7321739, 21965217]

約数ペア:

[(1, 21965217), (3, 7321739), (41, 535737), (43, 510819), (123, 178579), (129, 170273), (1763, 12459), (4153, 5289)]