21105884

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{331}}^1\times {\mathrm{839}}^1$

素因数の和:1193

約数の個数: 24

約数和(自身を含む): 39043200

約数和(自身を除く): 17937316

約数列:

[1, 2, 4, 19, 38, 76, 331, 662, 839, 1324, 1678, 3356, 6289, 12578, 15941, 25156, 31882, 63764, 277709, 555418, 1110836, 5276471, 10552942, 21105884]

約数ペア:

[(1, 21105884), (2, 10552942), (4, 5276471), (19, 1110836), (38, 555418), (76, 277709), (331, 63764), (662, 31882), (839, 25156), (1324, 15941), (1678, 12578), (3356, 6289)]