20811399

素因数分解:

$3^1\times 7^1\times {\mathrm{619}}^1\times {\mathrm{1601}}^1$

素因数の和:2230

約数の個数: 16

約数和(自身を含む): 31783680

約数和(自身を除く): 10972281

約数列:

[1, 3, 7, 21, 619, 1601, 1857, 4333, 4803, 11207, 12999, 33621, 991019, 2973057, 6937133, 20811399]

約数ペア:

[(1, 20811399), (3, 6937133), (7, 2973057), (21, 991019), (619, 33621), (1601, 12999), (1857, 11207), (4333, 4803)]