20979111

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{331}}^1\times {\mathrm{571}}^1$

素因数の和:942

約数の個数: 16

約数和(自身を含む): 28865408

約数和(自身を除く): 7886297

約数列:

[1, 3, 37, 111, 331, 571, 993, 1713, 12247, 21127, 36741, 63381, 189001, 567003, 6993037, 20979111]

約数ペア:

[(1, 20979111), (3, 6993037), (37, 567003), (111, 189001), (331, 63381), (571, 36741), (993, 21127), (1713, 12247)]