205577281

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{491}}^1$

素因数の和:661

約数の個数: 32

約数和(自身を含む): 261854208

約数和(自身を除く): 56276927

約数列:

[1, 7, 13, 43, 91, 107, 301, 491, 559, 749, 1391, 3437, 3913, 4601, 6383, 9737, 21113, 32207, 44681, 52537, 59813, 147791, 274469, 367759, 418691, 682981, 1921283, 2259091, 4780867, 15813637, 29368183, 205577281]

約数ペア:

[(1, 205577281), (7, 29368183), (13, 15813637), (43, 4780867), (91, 2259091), (107, 1921283), (301, 682981), (491, 418691), (559, 367759), (749, 274469), (1391, 147791), (3437, 59813), (3913, 52537), (4601, 44681), (6383, 32207), (9737, 21113)]