20512942520

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{10465787}}^1$

素因数の和:10465812

約数の個数: 48

約数和(自身を含む): 53689492440

約数和(自身を除く): 33176549920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 10465787, 20931574, 41863148, 52328935, 73260509, 83726296, 104657870, 146521018, 209315740, 293042036, 366302545, 418631480, 512823563, 586084072, 732605090, 1025647126, 1465210180, 2051294252, 2564117815, 2930420360, 4102588504, 5128235630, 10256471260, 20512942520]

約数ペア:

[(1, 20512942520), (2, 10256471260), (4, 5128235630), (5, 4102588504), (7, 2930420360), (8, 2564117815), (10, 2051294252), (14, 1465210180), (20, 1025647126), (28, 732605090), (35, 586084072), (40, 512823563), (49, 418631480), (56, 366302545), (70, 293042036), (98, 209315740), (140, 146521018), (196, 104657870), (245, 83726296), (280, 73260509), (392, 52328935), (490, 41863148), (980, 20931574), (1960, 10465787)]