21082945

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{10463}}^1$

素因数の和:10512

約数の個数: 16

約数和(自身を含む): 28127232

約数和(自身を除く): 7044287

約数列:

[1, 5, 13, 31, 65, 155, 403, 2015, 10463, 52315, 136019, 324353, 680095, 1621765, 4216589, 21082945]

約数ペア:

[(1, 21082945), (5, 4216589), (13, 1621765), (31, 680095), (65, 324353), (155, 136019), (403, 52315), (2015, 10463)]