80840

素因数分解:

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

素因数の和:101

約数の個数: 32

約数和(自身を含む): 190080

約数和(自身を除く): 109240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 47, 86, 94, 172, 188, 215, 235, 344, 376, 430, 470, 860, 940, 1720, 1880, 2021, 4042, 8084, 10105, 16168, 20210, 40420, 80840]

約数ペア:

[(1, 80840), (2, 40420), (4, 20210), (5, 16168), (8, 10105), (10, 8084), (20, 4042), (40, 2021), (43, 1880), (47, 1720), (86, 940), (94, 860), (172, 470), (188, 430), (215, 376), (235, 344)]