21171464

素因数分解:

$2^3\times {\mathrm{67}}^1\times {\mathrm{39499}}^1$

素因数の和:39572

約数の個数: 16

約数和(自身を含む): 40290000

約数和(自身を除く): 19118536

約数列:

[1, 2, 4, 8, 67, 134, 268, 536, 39499, 78998, 157996, 315992, 2646433, 5292866, 10585732, 21171464]

約数ペア:

[(1, 21171464), (2, 10585732), (4, 5292866), (8, 2646433), (67, 315992), (134, 157996), (268, 78998), (536, 39499)]