20719912

素因数分解:

$2^3\times {\mathrm{89}}^1\times {\mathrm{29101}}^1$

素因数の和:29196

約数の個数: 16

約数和(自身を含む): 39287700

約数和(自身を除く): 18567788

約数列:

[1, 2, 4, 8, 89, 178, 356, 712, 29101, 58202, 116404, 232808, 2589989, 5179978, 10359956, 20719912]

約数ペア:

[(1, 20719912), (2, 10359956), (4, 5179978), (8, 2589989), (89, 232808), (178, 116404), (356, 58202), (712, 29101)]