1280691

素因数分解:

$3^4\times {\mathrm{97}}^1\times {\mathrm{163}}^1$

素因数の和:272

約数の個数: 20

約数和(自身を含む): 1944712

約数和(自身を除く): 664021

約数列:

[1, 3, 9, 27, 81, 97, 163, 291, 489, 873, 1467, 2619, 4401, 7857, 13203, 15811, 47433, 142299, 426897, 1280691]

約数ペア:

[(1, 1280691), (3, 426897), (9, 142299), (27, 47433), (81, 15811), (97, 13203), (163, 7857), (291, 4401), (489, 2619), (873, 1467)]