21751345

素因数分解:

$5^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{1153}}^1$

素因数の和:1190

約数の個数: 32

約数和(自身を含む): 33235200

約数和(自身を除く): 11483855

約数列:

[1, 5, 7, 11, 35, 49, 55, 77, 245, 343, 385, 539, 1153, 1715, 2695, 3773, 5765, 8071, 12683, 18865, 40355, 56497, 63415, 88781, 282485, 395479, 443905, 621467, 1977395, 3107335, 4350269, 21751345]

約数ペア:

[(1, 21751345), (5, 4350269), (7, 3107335), (11, 1977395), (35, 621467), (49, 443905), (55, 395479), (77, 282485), (245, 88781), (343, 63415), (385, 56497), (539, 40355), (1153, 18865), (1715, 12683), (2695, 8071), (3773, 5765)]