20687564885

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{6771707}}^1$

素因数の和:6771772

約数の個数: 16

約数和(自身を含む): 27303526656

約数和(自身を除く): 6615961771

約数列:

[1, 5, 13, 47, 65, 235, 611, 3055, 6771707, 33858535, 88032191, 318270229, 440160955, 1591351145, 4137512977, 20687564885]

約数ペア:

[(1, 20687564885), (5, 4137512977), (13, 1591351145), (47, 440160955), (65, 318270229), (235, 88032191), (611, 33858535), (3055, 6771707)]