19181589

素因数分解:

$3^1\times 7^4\times {\mathrm{2663}}^1$

素因数の和:2694

約数の個数: 20

約数和(自身を含む): 29847456

約数和(自身を除く): 10665867

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 2401, 2663, 7203, 7989, 18641, 55923, 130487, 391461, 913409, 2740227, 6393863, 19181589]

約数ペア:

[(1, 19181589), (3, 6393863), (7, 2740227), (21, 913409), (49, 391461), (147, 130487), (343, 55923), (1029, 18641), (2401, 7989), (2663, 7203)]