21066080

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{2687}}^1$

素因数の和:2716

約数の個数: 72

約数和(自身を含む): 57915648

約数和(自身を除く): 36849568

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 2687, 3920, 5374, 7840, 10748, 13435, 18809, 21496, 26870, 37618, 42992, 53740, 75236, 85984, 94045, 107480, 131663, 150472, 188090, 214960, 263326, 300944, 376180, 429920, 526652, 601888, 658315, 752360, 1053304, 1316630, 1504720, 2106608, 2633260, 3009440, 4213216, 5266520, 10533040, 21066080]

約数ペア:

[(1, 21066080), (2, 10533040), (4, 5266520), (5, 4213216), (7, 3009440), (8, 2633260), (10, 2106608), (14, 1504720), (16, 1316630), (20, 1053304), (28, 752360), (32, 658315), (35, 601888), (40, 526652), (49, 429920), (56, 376180), (70, 300944), (80, 263326), (98, 214960), (112, 188090), (140, 150472), (160, 131663), (196, 107480), (224, 94045), (245, 85984), (280, 75236), (392, 53740), (490, 42992), (560, 37618), (784, 26870), (980, 21496), (1120, 18809), (1568, 13435), (1960, 10748), (2687, 7840), (3920, 5374)]