18980821449

素因数分解:

$3^4\times {\mathrm{127}}^1\times {\mathrm{233}}^1\times {\mathrm{7919}}^1$

素因数の和:8291

約数の個数: 40

約数和(自身を含む): 28703600640

約数和(自身を除く): 9722779191

約数列:

[1, 3, 9, 27, 81, 127, 233, 381, 699, 1143, 2097, 3429, 6291, 7919, 10287, 18873, 23757, 29591, 71271, 88773, 213813, 266319, 641439, 798957, 1005713, 1845127, 2396871, 3017139, 5535381, 9051417, 16606143, 27154251, 49818429, 81462753, 149455287, 234331129, 702993387, 2108980161, 6326940483, 18980821449]

約数ペア:

[(1, 18980821449), (3, 6326940483), (9, 2108980161), (27, 702993387), (81, 234331129), (127, 149455287), (233, 81462753), (381, 49818429), (699, 27154251), (1143, 16606143), (2097, 9051417), (3429, 5535381), (6291, 3017139), (7919, 2396871), (10287, 1845127), (18873, 1005713), (23757, 798957), (29591, 641439), (71271, 266319), (88773, 213813)]