20559707

素因数分解:

$7^1\times {\mathrm{53}}^1\times {\mathrm{151}}^1\times {\mathrm{367}}^1$

素因数の和:578

約数の個数: 16

約数和(自身を含む): 24164352

約数和(自身を除く): 3604645

約数列:

[1, 7, 53, 151, 367, 371, 1057, 2569, 8003, 19451, 55417, 56021, 136157, 387919, 2937101, 20559707]

約数ペア:

[(1, 20559707), (7, 2937101), (53, 387919), (151, 136157), (367, 56021), (371, 55417), (1057, 19451), (2569, 8003)]