20408619

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{5197}}^1$

素因数の和:5235

約数の個数: 32

約数和(自身を含む): 35928576

約数和(自身を除く): 15519957

約数列:

[1, 3, 7, 11, 17, 21, 33, 51, 77, 119, 187, 231, 357, 561, 1309, 3927, 5197, 15591, 36379, 57167, 88349, 109137, 171501, 265047, 400169, 618443, 971839, 1200507, 1855329, 2915517, 6802873, 20408619]

約数ペア:

[(1, 20408619), (3, 6802873), (7, 2915517), (11, 1855329), (17, 1200507), (21, 971839), (33, 618443), (51, 400169), (77, 265047), (119, 171501), (187, 109137), (231, 88349), (357, 57167), (561, 36379), (1309, 15591), (3927, 5197)]