20400393

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{691}}^1\times {\mathrm{757}}^1$

素因数の和:1464

約数の個数: 16

約数和(自身を含む): 29374016

約数和(自身を除く): 8973623

約数列:

[1, 3, 13, 39, 691, 757, 2073, 2271, 8983, 9841, 26949, 29523, 523087, 1569261, 6800131, 20400393]

約数ペア:

[(1, 20400393), (3, 6800131), (13, 1569261), (39, 523087), (691, 29523), (757, 26949), (2073, 9841), (2271, 8983)]