21503469

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{5153}}^1$

素因数の和:5276

約数の個数: 16

約数和(自身を含む): 31171392

約数和(自身を除く): 9667923

約数列:

[1, 3, 13, 39, 107, 321, 1391, 4173, 5153, 15459, 66989, 200967, 551371, 1654113, 7167823, 21503469]

約数ペア:

[(1, 21503469), (3, 7167823), (13, 1654113), (39, 551371), (107, 200967), (321, 66989), (1391, 15459), (4173, 5153)]