20043891

素因数分解:

$3^2\times 7^3\times {\mathrm{43}}^1\times {\mathrm{151}}^1$

素因数の和:221

約数の個数: 48

約数和(自身を含む): 34777600

約数和(自身を除く): 14733709

約数列:

[1, 3, 7, 9, 21, 43, 49, 63, 129, 147, 151, 301, 343, 387, 441, 453, 903, 1029, 1057, 1359, 2107, 2709, 3087, 3171, 6321, 6493, 7399, 9513, 14749, 18963, 19479, 22197, 44247, 45451, 51793, 58437, 66591, 132741, 136353, 155379, 318157, 409059, 466137, 954471, 2227099, 2863413, 6681297, 20043891]

約数ペア:

[(1, 20043891), (3, 6681297), (7, 2863413), (9, 2227099), (21, 954471), (43, 466137), (49, 409059), (63, 318157), (129, 155379), (147, 136353), (151, 132741), (301, 66591), (343, 58437), (387, 51793), (441, 45451), (453, 44247), (903, 22197), (1029, 19479), (1057, 18963), (1359, 14749), (2107, 9513), (2709, 7399), (3087, 6493), (3171, 6321)]