16665639

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1$

素因数の和:247

約数の個数: 32

約数和(自身を含む): 24482304

約数和(自身を除く): 7816665

約数列:

[1, 3, 23, 41, 43, 69, 123, 129, 137, 411, 943, 989, 1763, 2829, 2967, 3151, 5289, 5617, 5891, 9453, 16851, 17673, 40549, 121647, 129191, 135493, 241531, 387573, 406479, 724593, 5555213, 16665639]

約数ペア:

[(1, 16665639), (3, 5555213), (23, 724593), (41, 406479), (43, 387573), (69, 241531), (123, 135493), (129, 129191), (137, 121647), (411, 40549), (943, 17673), (989, 16851), (1763, 9453), (2829, 5891), (2967, 5617), (3151, 5289)]