21188090

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{3931}}^1$

素因数の和:3963

約数の個数: 48

約数和(自身を含む): 48410784

約数和(自身を除く): 27222694

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 49, 55, 70, 77, 98, 110, 154, 245, 385, 490, 539, 770, 1078, 2695, 3931, 5390, 7862, 19655, 27517, 39310, 43241, 55034, 86482, 137585, 192619, 216205, 275170, 302687, 385238, 432410, 605374, 963095, 1513435, 1926190, 2118809, 3026870, 4237618, 10594045, 21188090]

約数ペア:

[(1, 21188090), (2, 10594045), (5, 4237618), (7, 3026870), (10, 2118809), (11, 1926190), (14, 1513435), (22, 963095), (35, 605374), (49, 432410), (55, 385238), (70, 302687), (77, 275170), (98, 216205), (110, 192619), (154, 137585), (245, 86482), (385, 55034), (490, 43241), (539, 39310), (770, 27517), (1078, 19655), (2695, 7862), (3931, 5390)]