28080505

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1\times {\mathrm{997}}^1$

素因数の和:1176

約数の個数: 16

約数和(自身を含む): 34778304

約数和(自身を除く): 6697799

約数列:

[1, 5, 43, 131, 215, 655, 997, 4985, 5633, 28165, 42871, 130607, 214355, 653035, 5616101, 28080505]

約数ペア:

[(1, 28080505), (5, 5616101), (43, 653035), (131, 214355), (215, 130607), (655, 42871), (997, 28165), (4985, 5633)]