2018696875

素因数分解:

$5^5\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1$

素因数の和:171

約数の個数: 96

約数和(自身を含む): 2992308480

約数和(自身を除く): 973611605

約数列:

[1, 5, 13, 17, 25, 37, 65, 79, 85, 125, 185, 221, 325, 395, 425, 481, 625, 629, 925, 1027, 1105, 1343, 1625, 1975, 2125, 2405, 2923, 3125, 3145, 4625, 5135, 5525, 6715, 8125, 8177, 9875, 10625, 12025, 14615, 15725, 17459, 23125, 25675, 27625, 33575, 37999, 40625, 40885, 49375, 49691, 53125, 60125, 73075, 78625, 87295, 115625, 128375, 138125, 167875, 189995, 204425, 246875, 248455, 300625, 365375, 393125, 436475, 641875, 645983, 690625, 839375, 949975, 1022125, 1242275, 1503125, 1826875, 1965625, 2182375, 3209375, 3229915, 4196875, 4749875, 5110625, 6211375, 9134375, 10911875, 16149575, 23749375, 25553125, 31056875, 54559375, 80747875, 118746875, 155284375, 403739375, 2018696875]

約数ペア:

[(1, 2018696875), (5, 403739375), (13, 155284375), (17, 118746875), (25, 80747875), (37, 54559375), (65, 31056875), (79, 25553125), (85, 23749375), (125, 16149575), (185, 10911875), (221, 9134375), (325, 6211375), (395, 5110625), (425, 4749875), (481, 4196875), (625, 3229915), (629, 3209375), (925, 2182375), (1027, 1965625), (1105, 1826875), (1343, 1503125), (1625, 1242275), (1975, 1022125), (2125, 949975), (2405, 839375), (2923, 690625), (3125, 645983), (3145, 641875), (4625, 436475), (5135, 393125), (5525, 365375), (6715, 300625), (8125, 248455), (8177, 246875), (9875, 204425), (10625, 189995), (12025, 167875), (14615, 138125), (15725, 128375), (17459, 115625), (23125, 87295), (25675, 78625), (27625, 73075), (33575, 60125), (37999, 53125), (40625, 49691), (40885, 49375)]