19887952

素因数分解:

$2^4\times 7^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:188

約数の個数: 80

約数和(自身を含む): 46497024

約数和(自身を除く): 26609072

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 41, 56, 61, 71, 82, 112, 122, 142, 164, 244, 284, 287, 328, 427, 488, 497, 568, 574, 656, 854, 976, 994, 1136, 1148, 1708, 1988, 2296, 2501, 2911, 3416, 3976, 4331, 4592, 5002, 5822, 6832, 7952, 8662, 10004, 11644, 17324, 17507, 20008, 20377, 23288, 30317, 34648, 35014, 40016, 40754, 46576, 60634, 69296, 70028, 81508, 121268, 140056, 163016, 177571, 242536, 280112, 326032, 355142, 485072, 710284, 1242997, 1420568, 2485994, 2841136, 4971988, 9943976, 19887952]

約数ペア:

[(1, 19887952), (2, 9943976), (4, 4971988), (7, 2841136), (8, 2485994), (14, 1420568), (16, 1242997), (28, 710284), (41, 485072), (56, 355142), (61, 326032), (71, 280112), (82, 242536), (112, 177571), (122, 163016), (142, 140056), (164, 121268), (244, 81508), (284, 70028), (287, 69296), (328, 60634), (427, 46576), (488, 40754), (497, 40016), (568, 35014), (574, 34648), (656, 30317), (854, 23288), (976, 20377), (994, 20008), (1136, 17507), (1148, 17324), (1708, 11644), (1988, 10004), (2296, 8662), (2501, 7952), (2911, 6832), (3416, 5822), (3976, 5002), (4331, 4592)]