20489105

素因数分解:

$5^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{919}}^1$

素因数の和:958

約数の個数: 32

約数和(自身を含む): 30912000

約数和(自身を除く): 10422895

約数列:

[1, 5, 7, 13, 35, 49, 65, 91, 245, 343, 455, 637, 919, 1715, 3185, 4459, 4595, 6433, 11947, 22295, 32165, 45031, 59735, 83629, 225155, 315217, 418145, 585403, 1576085, 2927015, 4097821, 20489105]

約数ペア:

[(1, 20489105), (5, 4097821), (7, 2927015), (13, 1576085), (35, 585403), (49, 418145), (65, 315217), (91, 225155), (245, 83629), (343, 59735), (455, 45031), (637, 32165), (919, 22295), (1715, 11947), (3185, 6433), (4459, 4595)]