15978555

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{20887}}^1$

素因数の和:20915

約数の個数: 24

約数和(自身を含む): 29326752

約数和(自身を除く): 13348197

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 20887, 62661, 104435, 187983, 313305, 355079, 939915, 1065237, 1775395, 3195711, 5326185, 15978555]

約数ペア:

[(1, 15978555), (3, 5326185), (5, 3195711), (9, 1775395), (15, 1065237), (17, 939915), (45, 355079), (51, 313305), (85, 187983), (153, 104435), (255, 62661), (765, 20887)]