21328424

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{205081}}^1$

素因数の和:205100

約数の個数: 16

約数和(自身を含む): 43067220

約数和(自身を除く): 21738796

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 205081, 410162, 820324, 1640648, 2666053, 5332106, 10664212, 21328424]

約数ペア:

[(1, 21328424), (2, 10664212), (4, 5332106), (8, 2666053), (13, 1640648), (26, 820324), (52, 410162), (104, 205081)]