2158802261

素因数分解:

$7^2\times {\mathrm{11}}^2\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1$

素因数の和:271

約数の個数: 72

約数和(自身を含む): 2887815168

約数和(自身を除く): 729012907

約数列:

[1, 7, 11, 47, 49, 61, 77, 121, 127, 329, 427, 517, 539, 671, 847, 889, 1397, 2303, 2867, 2989, 3619, 4697, 5687, 5929, 5969, 6223, 7381, 7747, 9779, 15367, 20069, 25333, 31537, 32879, 39809, 41783, 51667, 54229, 65659, 68453, 85217, 107569, 140483, 220759, 278663, 292481, 346907, 361669, 364109, 379603, 459613, 596519, 722249, 752983, 937387, 1545313, 2428349, 2548763, 3217291, 4005199, 4175633, 5055743, 6561709, 16998443, 17841341, 28036393, 35390201, 44057189, 45931963, 196254751, 308400323, 2158802261]

約数ペア:

[(1, 2158802261), (7, 308400323), (11, 196254751), (47, 45931963), (49, 44057189), (61, 35390201), (77, 28036393), (121, 17841341), (127, 16998443), (329, 6561709), (427, 5055743), (517, 4175633), (539, 4005199), (671, 3217291), (847, 2548763), (889, 2428349), (1397, 1545313), (2303, 937387), (2867, 752983), (2989, 722249), (3619, 596519), (4697, 459613), (5687, 379603), (5929, 364109), (5969, 361669), (6223, 346907), (7381, 292481), (7747, 278663), (9779, 220759), (15367, 140483), (20069, 107569), (25333, 85217), (31537, 68453), (32879, 65659), (39809, 54229), (41783, 51667)]