81234280

素因数分解:

$2^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{15991}}^1$

素因数の和:16129

約数の個数: 32

約数和(自身を含む): 184227840

約数和(自身を除く): 102993560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 127, 254, 508, 635, 1016, 1270, 2540, 5080, 15991, 31982, 63964, 79955, 127928, 159910, 319820, 639640, 2030857, 4061714, 8123428, 10154285, 16246856, 20308570, 40617140, 81234280]

約数ペア:

[(1, 81234280), (2, 40617140), (4, 20308570), (5, 16246856), (8, 10154285), (10, 8123428), (20, 4061714), (40, 2030857), (127, 639640), (254, 319820), (508, 159910), (635, 127928), (1016, 79955), (1270, 63964), (2540, 31982), (5080, 15991)]