28780167

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{523}}^1$

素因数の和:639

約数の個数: 32

約数和(自身を含む): 44368128

約数和(自身を除く): 15587961

約数列:

[1, 3, 13, 17, 39, 51, 83, 221, 249, 523, 663, 1079, 1411, 1569, 3237, 4233, 6799, 8891, 18343, 20397, 26673, 43409, 55029, 115583, 130227, 346749, 564317, 737953, 1692951, 2213859, 9593389, 28780167]

約数ペア:

[(1, 28780167), (3, 9593389), (13, 2213859), (17, 1692951), (39, 737953), (51, 564317), (83, 346749), (221, 130227), (249, 115583), (523, 55029), (663, 43409), (1079, 26673), (1411, 20397), (1569, 18343), (3237, 8891), (4233, 6799)]