81990000

素因数分解:

$2^4\times 3^2\times 5^4\times {\mathrm{911}}^1$

素因数の和:945

約数の個数: 150

約数和(自身を含む): 287045616

約数和(自身を除く): 205055616

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 30, 36, 40, 45, 48, 50, 60, 72, 75, 80, 90, 100, 120, 125, 144, 150, 180, 200, 225, 240, 250, 300, 360, 375, 400, 450, 500, 600, 625, 720, 750, 900, 911, 1000, 1125, 1200, 1250, 1500, 1800, 1822, 1875, 2000, 2250, 2500, 2733, 3000, 3600, 3644, 3750, 4500, 4555, 5000, 5466, 5625, 6000, 7288, 7500, 8199, 9000, 9110, 10000, 10932, 11250, 13665, 14576, 15000, 16398, 18000, 18220, 21864, 22500, 22775, 27330, 30000, 32796, 36440, 40995, 43728, 45000, 45550, 54660, 65592, 68325, 72880, 81990, 90000, 91100, 109320, 113875, 131184, 136650, 163980, 182200, 204975, 218640, 227750, 273300, 327960, 341625, 364400, 409950, 455500, 546600, 569375, 655920, 683250, 819900, 911000, 1024875, 1093200, 1138750, 1366500, 1639800, 1708125, 1822000, 2049750, 2277500, 2733000, 3279600, 3416250, 4099500, 4555000, 5124375, 5466000, 6832500, 8199000, 9110000, 10248750, 13665000, 16398000, 20497500, 27330000, 40995000, 81990000]

約数ペア:

[(1, 81990000), (2, 40995000), (3, 27330000), (4, 20497500), (5, 16398000), (6, 13665000), (8, 10248750), (9, 9110000), (10, 8199000), (12, 6832500), (15, 5466000), (16, 5124375), (18, 4555000), (20, 4099500), (24, 3416250), (25, 3279600), (30, 2733000), (36, 2277500), (40, 2049750), (45, 1822000), (48, 1708125), (50, 1639800), (60, 1366500), (72, 1138750), (75, 1093200), (80, 1024875), (90, 911000), (100, 819900), (120, 683250), (125, 655920), (144, 569375), (150, 546600), (180, 455500), (200, 409950), (225, 364400), (240, 341625), (250, 327960), (300, 273300), (360, 227750), (375, 218640), (400, 204975), (450, 182200), (500, 163980), (600, 136650), (625, 131184), (720, 113875), (750, 109320), (900, 91100), (911, 90000), (1000, 81990), (1125, 72880), (1200, 68325), (1250, 65592), (1500, 54660), (1800, 45550), (1822, 45000), (1875, 43728), (2000, 40995), (2250, 36440), (2500, 32796), (2733, 30000), (3000, 27330), (3600, 22775), (3644, 22500), (3750, 21864), (4500, 18220), (4555, 18000), (5000, 16398), (5466, 15000), (5625, 14576), (6000, 13665), (7288, 11250), (7500, 10932), (8199, 10000), (9000, 9110)]