81372095

素因数分解:

$5^1\times 7^2\times {\mathrm{199}}^1\times {\mathrm{1669}}^1$

素因数の和:1887

約数の個数: 24

約数和(自身を含む): 114228000

約数和(自身を除く): 32855905

約数列:

[1, 5, 7, 35, 49, 199, 245, 995, 1393, 1669, 6965, 8345, 9751, 11683, 48755, 58415, 81781, 332131, 408905, 1660655, 2324917, 11624585, 16274419, 81372095]

約数ペア:

[(1, 81372095), (5, 16274419), (7, 11624585), (35, 2324917), (49, 1660655), (199, 408905), (245, 332131), (995, 81781), (1393, 58415), (1669, 48755), (6965, 11683), (8345, 9751)]