20274518

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{199}}^1\times {\mathrm{421}}^1$

素因数の和:644

約数の個数: 24

約数和(自身を含む): 33675600

約数和(自身を除く): 13401082

約数列:

[1, 2, 11, 22, 121, 199, 242, 398, 421, 842, 2189, 4378, 4631, 9262, 24079, 48158, 50941, 83779, 101882, 167558, 921569, 1843138, 10137259, 20274518]

約数ペア:

[(1, 20274518), (2, 10137259), (11, 1843138), (22, 921569), (121, 167558), (199, 101882), (242, 83779), (398, 50941), (421, 48158), (842, 24079), (2189, 9262), (4378, 4631)]