21891499

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{919}}^1$

素因数の和:1050

約数の個数: 16

約数和(自身を含む): 25966080

約数和(自身を除く): 4074581

約数列:

[1, 7, 41, 83, 287, 581, 919, 3403, 6433, 23821, 37679, 76277, 263753, 533939, 3127357, 21891499]

約数ペア:

[(1, 21891499), (7, 3127357), (41, 533939), (83, 263753), (287, 76277), (581, 37679), (919, 23821), (3403, 6433)]