81213925

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{283}}^1\times {\mathrm{883}}^1$

素因数の和:1189

約数の個数: 24

約数和(自身を含む): 108958304

約数和(自身を除く): 27744379

約数列:

[1, 5, 13, 25, 65, 283, 325, 883, 1415, 3679, 4415, 7075, 11479, 18395, 22075, 57395, 91975, 249889, 286975, 1249445, 3248557, 6247225, 16242785, 81213925]

約数ペア:

[(1, 81213925), (5, 16242785), (13, 6247225), (25, 3248557), (65, 1249445), (283, 286975), (325, 249889), (883, 91975), (1415, 57395), (3679, 22075), (4415, 18395), (7075, 11479)]