20896743

素因数分解:

$3^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{9661}}^1$

素因数の和:9774

約数の個数: 16

約数和(自身を含む): 32155136

約数和(自身を除く): 11258393

約数列:

[1, 3, 7, 21, 103, 309, 721, 2163, 9661, 28983, 67627, 202881, 995083, 2985249, 6965581, 20896743]

約数ペア:

[(1, 20896743), (3, 6965581), (7, 2985249), (21, 995083), (103, 202881), (309, 67627), (721, 28983), (2163, 9661)]