21712084

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{859}}^1$

素因数の和:1023

約数の個数: 24

約数和(自身を含む): 39009600

約数和(自身を除く): 17297516

約数列:

[1, 2, 4, 71, 89, 142, 178, 284, 356, 859, 1718, 3436, 6319, 12638, 25276, 60989, 76451, 121978, 152902, 243956, 305804, 5428021, 10856042, 21712084]

約数ペア:

[(1, 21712084), (2, 10856042), (4, 5428021), (71, 305804), (89, 243956), (142, 152902), (178, 121978), (284, 76451), (356, 60989), (859, 25276), (1718, 12638), (3436, 6319)]