81006505

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1\times {\mathrm{2789}}^1$

素因数の和:2988

約数の個数: 16

約数和(自身を含む): 100506960

約数和(自身を除く): 19500455

約数列:

[1, 5, 37, 157, 185, 785, 2789, 5809, 13945, 29045, 103193, 437873, 515965, 2189365, 16201301, 81006505]

約数ペア:

[(1, 81006505), (5, 16201301), (37, 2189365), (157, 515965), (185, 437873), (785, 103193), (2789, 29045), (5809, 13945)]