19992531

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{839}}^1$

素因数の和:915

約数の個数: 24

約数和(自身を含む): 29514240

約数和(自身を除く): 9521709

約数列:

[1, 3, 13, 39, 47, 141, 169, 507, 611, 839, 1833, 2517, 7943, 10907, 23829, 32721, 39433, 118299, 141791, 425373, 512629, 1537887, 6664177, 19992531]

約数ペア:

[(1, 19992531), (3, 6664177), (13, 1537887), (39, 512629), (47, 425373), (141, 141791), (169, 118299), (507, 39433), (611, 32721), (839, 23829), (1833, 10907), (2517, 7943)]