8811560

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1$

素因数の和:210

約数の個数: 64

約数和(自身を含む): 20908800

約数和(自身を除く): 12097240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 47, 86, 94, 109, 172, 188, 215, 218, 235, 344, 376, 430, 436, 470, 545, 860, 872, 940, 1090, 1720, 1880, 2021, 2180, 4042, 4360, 4687, 5123, 8084, 9374, 10105, 10246, 16168, 18748, 20210, 20492, 23435, 25615, 37496, 40420, 40984, 46870, 51230, 80840, 93740, 102460, 187480, 204920, 220289, 440578, 881156, 1101445, 1762312, 2202890, 4405780, 8811560]

約数ペア:

[(1, 8811560), (2, 4405780), (4, 2202890), (5, 1762312), (8, 1101445), (10, 881156), (20, 440578), (40, 220289), (43, 204920), (47, 187480), (86, 102460), (94, 93740), (109, 80840), (172, 51230), (188, 46870), (215, 40984), (218, 40420), (235, 37496), (344, 25615), (376, 23435), (430, 20492), (436, 20210), (470, 18748), (545, 16168), (860, 10246), (872, 10105), (940, 9374), (1090, 8084), (1720, 5123), (1880, 4687), (2021, 4360), (2180, 4042)]