20075555

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{257}}^1\times {\mathrm{919}}^1$

素因数の和:1198

約数の個数: 16

約数和(自身を含む): 25634880

約数和(自身を除く): 5559325

約数列:

[1, 5, 17, 85, 257, 919, 1285, 4369, 4595, 15623, 21845, 78115, 236183, 1180915, 4015111, 20075555]

約数ペア:

[(1, 20075555), (5, 4015111), (17, 1180915), (85, 236183), (257, 78115), (919, 21845), (1285, 15623), (4369, 4595)]