18707979

素因数分解:

$3^1\times {\mathrm{131}}^1\times {\mathrm{181}}^1\times {\mathrm{263}}^1$

素因数の和:578

約数の個数: 16

約数和(自身を含む): 25369344

約数和(自身を除く): 6661365

約数列:

[1, 3, 131, 181, 263, 393, 543, 789, 23711, 34453, 47603, 71133, 103359, 142809, 6235993, 18707979]

約数ペア:

[(1, 18707979), (3, 6235993), (131, 142809), (181, 103359), (263, 71133), (393, 47603), (543, 34453), (789, 23711)]