81605225

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{1301}}^1$

素因数の和:1517

約数の個数: 24

約数和(自身を含む): 109623192

約数和(自身を除く): 28017967

約数列:

[1, 5, 13, 25, 65, 193, 325, 965, 1301, 2509, 4825, 6505, 12545, 16913, 32525, 62725, 84565, 251093, 422825, 1255465, 3264209, 6277325, 16321045, 81605225]

約数ペア:

[(1, 81605225), (5, 16321045), (13, 6277325), (25, 3264209), (65, 1255465), (193, 422825), (325, 251093), (965, 84565), (1301, 62725), (2509, 32525), (4825, 16913), (6505, 12545)]