20091560

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{10687}}^1$

素因数の和:10745

約数の個数: 32

約数和(自身を含む): 46172160

約数和(自身を除く): 26080600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 10687, 21374, 42748, 53435, 85496, 106870, 213740, 427480, 502289, 1004578, 2009156, 2511445, 4018312, 5022890, 10045780, 20091560]

約数ペア:

[(1, 20091560), (2, 10045780), (4, 5022890), (5, 4018312), (8, 2511445), (10, 2009156), (20, 1004578), (40, 502289), (47, 427480), (94, 213740), (188, 106870), (235, 85496), (376, 53435), (470, 42748), (940, 21374), (1880, 10687)]