20819739

素因数分解:

$3^1\times {\mathrm{79}}^1\times {\mathrm{107}}^1\times {\mathrm{821}}^1$

素因数の和:1010

約数の個数: 16

約数和(自身を含む): 28408320

約数和(自身を除く): 7588581

約数列:

[1, 3, 79, 107, 237, 321, 821, 2463, 8453, 25359, 64859, 87847, 194577, 263541, 6939913, 20819739]

約数ペア:

[(1, 20819739), (3, 6939913), (79, 263541), (107, 194577), (237, 87847), (321, 64859), (821, 25359), (2463, 8453)]