21723208

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{208877}}^1$

素因数の和:208896

約数の個数: 16

約数和(自身を含む): 43864380

約数和(自身を除く): 22141172

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 208877, 417754, 835508, 1671016, 2715401, 5430802, 10861604, 21723208]

約数ペア:

[(1, 21723208), (2, 10861604), (4, 5430802), (8, 2715401), (13, 1671016), (26, 835508), (52, 417754), (104, 208877)]