15918903

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1$

素因数の和:90

約数の個数: 128

約数和(自身を含む): 34406400

約数和(自身を除く): 18487497

約数列:

[1, 3, 7, 9, 11, 13, 19, 21, 27, 31, 33, 39, 57, 63, 77, 91, 93, 99, 117, 133, 143, 171, 189, 209, 217, 231, 247, 273, 279, 297, 341, 351, 399, 403, 429, 513, 589, 627, 651, 693, 741, 819, 837, 1001, 1023, 1197, 1209, 1287, 1463, 1729, 1767, 1881, 1953, 2079, 2223, 2387, 2457, 2717, 2821, 3003, 3069, 3591, 3627, 3861, 4123, 4389, 4433, 5187, 5301, 5643, 5859, 6479, 6669, 7161, 7657, 8151, 8463, 9009, 9207, 10881, 12369, 13167, 13299, 15561, 15903, 19019, 19437, 21483, 22971, 24453, 25389, 27027, 31031, 37107, 39501, 39897, 45353, 46683, 53599, 57057, 58311, 64449, 68913, 73359, 76167, 84227, 93093, 111321, 119691, 136059, 160797, 171171, 174933, 206739, 252681, 279279, 408177, 482391, 513513, 589589, 758043, 837837, 1224531, 1447173, 1768767, 2274129, 5306301, 15918903]

約数ペア:

[(1, 15918903), (3, 5306301), (7, 2274129), (9, 1768767), (11, 1447173), (13, 1224531), (19, 837837), (21, 758043), (27, 589589), (31, 513513), (33, 482391), (39, 408177), (57, 279279), (63, 252681), (77, 206739), (91, 174933), (93, 171171), (99, 160797), (117, 136059), (133, 119691), (143, 111321), (171, 93093), (189, 84227), (209, 76167), (217, 73359), (231, 68913), (247, 64449), (273, 58311), (279, 57057), (297, 53599), (341, 46683), (351, 45353), (399, 39897), (403, 39501), (429, 37107), (513, 31031), (589, 27027), (627, 25389), (651, 24453), (693, 22971), (741, 21483), (819, 19437), (837, 19019), (1001, 15903), (1023, 15561), (1197, 13299), (1209, 13167), (1287, 12369), (1463, 10881), (1729, 9207), (1767, 9009), (1881, 8463), (1953, 8151), (2079, 7657), (2223, 7161), (2387, 6669), (2457, 6479), (2717, 5859), (2821, 5643), (3003, 5301), (3069, 5187), (3591, 4433), (3627, 4389), (3861, 4123)]