21029721

素因数分解:

$3^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1\times {\mathrm{997}}^1$

素因数の和:1168

約数の個数: 16

約数和(自身を含む): 28742400

約数和(自身を除く): 7712679

約数列:

[1, 3, 79, 89, 237, 267, 997, 2991, 7031, 21093, 78763, 88733, 236289, 266199, 7009907, 21029721]

約数ペア:

[(1, 21029721), (3, 7009907), (79, 266199), (89, 236289), (237, 88733), (267, 78763), (997, 21093), (2991, 7031)]