207918981

素因数分解:

$3^4\times {\mathrm{199}}^1\times {\mathrm{12899}}^1$

素因数の和:13110

約数の個数: 20

約数和(自身を含む): 312180000

約数和(自身を除く): 104261019

約数列:

[1, 3, 9, 27, 81, 199, 597, 1791, 5373, 12899, 16119, 38697, 116091, 348273, 1044819, 2566901, 7700703, 23102109, 69306327, 207918981]

約数ペア:

[(1, 207918981), (3, 69306327), (9, 23102109), (27, 7700703), (81, 2566901), (199, 1044819), (597, 348273), (1791, 116091), (5373, 38697), (12899, 16119)]