2180745

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1$

素因数の和:91

約数の個数: 72

約数和(自身を含む): 4694976

約数和(自身を除く): 2514231

約数列:

[1, 3, 5, 7, 9, 15, 21, 23, 35, 43, 45, 49, 63, 69, 105, 115, 129, 147, 161, 207, 215, 245, 301, 315, 345, 387, 441, 483, 645, 735, 805, 903, 989, 1035, 1127, 1449, 1505, 1935, 2107, 2205, 2415, 2709, 2967, 3381, 4515, 4945, 5635, 6321, 6923, 7245, 8901, 10143, 10535, 13545, 14835, 16905, 18963, 20769, 31605, 34615, 44505, 48461, 50715, 62307, 94815, 103845, 145383, 242305, 311535, 436149, 726915, 2180745]

約数ペア:

[(1, 2180745), (3, 726915), (5, 436149), (7, 311535), (9, 242305), (15, 145383), (21, 103845), (23, 94815), (35, 62307), (43, 50715), (45, 48461), (49, 44505), (63, 34615), (69, 31605), (105, 20769), (115, 18963), (129, 16905), (147, 14835), (161, 13545), (207, 10535), (215, 10143), (245, 8901), (301, 7245), (315, 6923), (345, 6321), (387, 5635), (441, 4945), (483, 4515), (645, 3381), (735, 2967), (805, 2709), (903, 2415), (989, 2205), (1035, 2107), (1127, 1935), (1449, 1505)]