21240753

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{7159}}^1$

素因数の和:7228

約数の個数: 16

約数和(自身を含む): 30243840

約数和(自身を除く): 9003087

約数列:

[1, 3, 23, 43, 69, 129, 989, 2967, 7159, 21477, 164657, 307837, 493971, 923511, 7080251, 21240753]

約数ペア:

[(1, 21240753), (3, 7080251), (23, 923511), (43, 493971), (69, 307837), (129, 164657), (989, 21477), (2967, 7159)]