21208893

素因数分解:

$3^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1\times {\mathrm{821}}^1$

素因数の和:1012

約数の個数: 16

約数和(自身を含む): 28934400

約数和(自身を除く): 7725507

約数列:

[1, 3, 79, 109, 237, 327, 821, 2463, 8611, 25833, 64859, 89489, 194577, 268467, 7069631, 21208893]

約数ペア:

[(1, 21208893), (3, 7069631), (79, 268467), (109, 194577), (237, 89489), (327, 64859), (821, 25833), (2463, 8611)]