20404910

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{1123}}^1$

素因数の和:1232

約数の個数: 32

約数和(自身を含む): 38845440

約数和(自身を除く): 18440530

約数列:

[1, 2, 5, 10, 23, 46, 79, 115, 158, 230, 395, 790, 1123, 1817, 2246, 3634, 5615, 9085, 11230, 18170, 25829, 51658, 88717, 129145, 177434, 258290, 443585, 887170, 2040491, 4080982, 10202455, 20404910]

約数ペア:

[(1, 20404910), (2, 10202455), (5, 4080982), (10, 2040491), (23, 887170), (46, 443585), (79, 258290), (115, 177434), (158, 129145), (230, 88717), (395, 51658), (790, 25829), (1123, 18170), (1817, 11230), (2246, 9085), (3634, 5615)]