81478278

素因数分解:

$2^1\times 3^3\times 7^3\times {\mathrm{53}}^1\times {\mathrm{83}}^1$

素因数の和:168

約数の個数: 128

約数和(自身を含む): 217728000

約数和(自身を除く): 136249722

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 49, 53, 54, 63, 83, 98, 106, 126, 147, 159, 166, 189, 249, 294, 318, 343, 371, 378, 441, 477, 498, 581, 686, 742, 747, 882, 954, 1029, 1113, 1162, 1323, 1431, 1494, 1743, 2058, 2226, 2241, 2597, 2646, 2862, 3087, 3339, 3486, 4067, 4399, 4482, 5194, 5229, 6174, 6678, 7791, 8134, 8798, 9261, 10017, 10458, 12201, 13197, 15582, 15687, 18179, 18522, 20034, 23373, 24402, 26394, 28469, 30793, 31374, 36358, 36603, 39591, 46746, 54537, 56938, 61586, 70119, 73206, 79182, 85407, 92379, 109074, 109809, 118773, 140238, 163611, 170814, 184758, 215551, 219618, 237546, 256221, 277137, 327222, 431102, 490833, 512442, 554274, 646653, 768663, 831411, 981666, 1293306, 1508857, 1537326, 1662822, 1939959, 3017714, 3879918, 4526571, 5819877, 9053142, 11639754, 13579713, 27159426, 40739139, 81478278]

約数ペア:

[(1, 81478278), (2, 40739139), (3, 27159426), (6, 13579713), (7, 11639754), (9, 9053142), (14, 5819877), (18, 4526571), (21, 3879918), (27, 3017714), (42, 1939959), (49, 1662822), (53, 1537326), (54, 1508857), (63, 1293306), (83, 981666), (98, 831411), (106, 768663), (126, 646653), (147, 554274), (159, 512442), (166, 490833), (189, 431102), (249, 327222), (294, 277137), (318, 256221), (343, 237546), (371, 219618), (378, 215551), (441, 184758), (477, 170814), (498, 163611), (581, 140238), (686, 118773), (742, 109809), (747, 109074), (882, 92379), (954, 85407), (1029, 79182), (1113, 73206), (1162, 70119), (1323, 61586), (1431, 56938), (1494, 54537), (1743, 46746), (2058, 39591), (2226, 36603), (2241, 36358), (2597, 31374), (2646, 30793), (2862, 28469), (3087, 26394), (3339, 24402), (3486, 23373), (4067, 20034), (4399, 18522), (4482, 18179), (5194, 15687), (5229, 15582), (6174, 13197), (6678, 12201), (7791, 10458), (8134, 10017), (8798, 9261)]