20971071

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{4507}}^1$

素因数の和:4571

約数の個数: 24

約数和(自身を含む): 33755904

約数和(自身を除く): 12784833

約数列:

[1, 3, 9, 11, 33, 47, 99, 141, 423, 517, 1551, 4507, 4653, 13521, 40563, 49577, 148731, 211829, 446193, 635487, 1906461, 2330119, 6990357, 20971071]

約数ペア:

[(1, 20971071), (3, 6990357), (9, 2330119), (11, 1906461), (33, 635487), (47, 446193), (99, 211829), (141, 148731), (423, 49577), (517, 40563), (1551, 13521), (4507, 4653)]