20997088

素因数分解:

$2^5\times 7^3\times {\mathrm{1913}}^1$

素因数の和:1944

約数の個数: 48

約数和(自身を含む): 48232800

約数和(自身を除く): 27235712

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 98, 112, 196, 224, 343, 392, 686, 784, 1372, 1568, 1913, 2744, 3826, 5488, 7652, 10976, 13391, 15304, 26782, 30608, 53564, 61216, 93737, 107128, 187474, 214256, 374948, 428512, 656159, 749896, 1312318, 1499792, 2624636, 2999584, 5249272, 10498544, 20997088]

約数ペア:

[(1, 20997088), (2, 10498544), (4, 5249272), (7, 2999584), (8, 2624636), (14, 1499792), (16, 1312318), (28, 749896), (32, 656159), (49, 428512), (56, 374948), (98, 214256), (112, 187474), (196, 107128), (224, 93737), (343, 61216), (392, 53564), (686, 30608), (784, 26782), (1372, 15304), (1568, 13391), (1913, 10976), (2744, 7652), (3826, 5488)]