12781557

素因数分解:

$3^6\times {\mathrm{89}}^1\times {\mathrm{197}}^1$

素因数の和:304

約数の個数: 28

約数和(自身を含む): 19477260

約数和(自身を除く): 6695703

約数列:

[1, 3, 9, 27, 81, 89, 197, 243, 267, 591, 729, 801, 1773, 2403, 5319, 7209, 15957, 17533, 21627, 47871, 52599, 64881, 143613, 157797, 473391, 1420173, 4260519, 12781557]

約数ペア:

[(1, 12781557), (3, 4260519), (9, 1420173), (27, 473391), (81, 157797), (89, 143613), (197, 64881), (243, 52599), (267, 47871), (591, 21627), (729, 17533), (801, 15957), (1773, 7209), (2403, 5319)]