21407085

素因数分解:

$3^6\times 5^1\times 7^1\times {\mathrm{839}}^1$

素因数の和:869

約数の個数: 56

約数和(自身を含む): 44069760

約数和(自身を除く): 22662675

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 243, 315, 405, 567, 729, 839, 945, 1215, 1701, 2517, 2835, 3645, 4195, 5103, 5873, 7551, 8505, 12585, 17619, 22653, 25515, 29365, 37755, 52857, 67959, 88095, 113265, 158571, 203877, 264285, 339795, 475713, 611631, 792855, 1019385, 1427139, 2378565, 3058155, 4281417, 7135695, 21407085]

約数ペア:

[(1, 21407085), (3, 7135695), (5, 4281417), (7, 3058155), (9, 2378565), (15, 1427139), (21, 1019385), (27, 792855), (35, 611631), (45, 475713), (63, 339795), (81, 264285), (105, 203877), (135, 158571), (189, 113265), (243, 88095), (315, 67959), (405, 52857), (567, 37755), (729, 29365), (839, 25515), (945, 22653), (1215, 17619), (1701, 12585), (2517, 8505), (2835, 7551), (3645, 5873), (4195, 5103)]