2151121

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{431}}^1$

素因数の和:492

約数の個数: 16

約数和(自身を含む): 2654208

約数和(自身を除く): 503087

約数列:

[1, 7, 23, 31, 161, 217, 431, 713, 3017, 4991, 9913, 13361, 69391, 93527, 307303, 2151121]

約数ペア:

[(1, 2151121), (7, 307303), (23, 93527), (31, 69391), (161, 13361), (217, 9913), (431, 4991), (713, 3017)]