20204541

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{4517}}^1$

素因数の和:4601

約数の個数: 24

約数和(自身を含む): 33830784

約数和(自身を除く): 13626243

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 4473, 4517, 13551, 31619, 40653, 94857, 284571, 320707, 962121, 2244949, 2886363, 6734847, 20204541]

約数ペア:

[(1, 20204541), (3, 6734847), (7, 2886363), (9, 2244949), (21, 962121), (63, 320707), (71, 284571), (213, 94857), (497, 40653), (639, 31619), (1491, 13551), (4473, 4517)]