28991817

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{761}}^1$

素因数の和:870

約数の個数: 32

約数和(自身を含む): 46085760

約数和(自身を除く): 17093943

約数列:

[1, 3, 9, 17, 27, 51, 83, 153, 249, 459, 747, 761, 1411, 2241, 2283, 4233, 6849, 12699, 12937, 20547, 38097, 38811, 63163, 116433, 189489, 349299, 568467, 1073771, 1705401, 3221313, 9663939, 28991817]

約数ペア:

[(1, 28991817), (3, 9663939), (9, 3221313), (17, 1705401), (27, 1073771), (51, 568467), (83, 349299), (153, 189489), (249, 116433), (459, 63163), (747, 38811), (761, 38097), (1411, 20547), (2241, 12937), (2283, 12699), (4233, 6849)]