19864167

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{179}}^1\times {\mathrm{521}}^1$

素因数の和:774

約数の個数: 16

約数和(自身を含む): 27060480

約数和(自身を除く): 7196313

約数列:

[1, 3, 71, 179, 213, 521, 537, 1563, 12709, 36991, 38127, 93259, 110973, 279777, 6621389, 19864167]

約数ペア:

[(1, 19864167), (3, 6621389), (71, 279777), (179, 110973), (213, 93259), (521, 38127), (537, 36991), (1563, 12709)]