19887801

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{6703}}^1$

素因数の和:6772

約数の個数: 16

約数和(自身を含む): 28317696

約数和(自身を除く): 8429895

約数列:

[1, 3, 23, 43, 69, 129, 989, 2967, 6703, 20109, 154169, 288229, 462507, 864687, 6629267, 19887801]

約数ペア:

[(1, 19887801), (3, 6629267), (23, 864687), (43, 462507), (69, 288229), (129, 154169), (989, 20109), (2967, 6703)]