28207965

素因数分解:

$3^1\times 5^1\times {\mathrm{83}}^1\times {\mathrm{139}}^1\times {\mathrm{163}}^1$

素因数の和:393

約数の個数: 32

約数和(自身を含む): 46287360

約数和(自身を除く): 18079395

約数列:

[1, 3, 5, 15, 83, 139, 163, 249, 415, 417, 489, 695, 815, 1245, 2085, 2445, 11537, 13529, 22657, 34611, 40587, 57685, 67645, 67971, 113285, 173055, 202935, 339855, 1880531, 5641593, 9402655, 28207965]

約数ペア:

[(1, 28207965), (3, 9402655), (5, 5641593), (15, 1880531), (83, 339855), (139, 202935), (163, 173055), (249, 113285), (415, 67971), (417, 67645), (489, 57685), (695, 40587), (815, 34611), (1245, 22657), (2085, 13529), (2445, 11537)]