855000

素因数分解:

$2^3\times 3^2\times 5^4\times {\mathrm{19}}^1$

素因数の和:51

約数の個数: 120

約数和(自身を含む): 3045900

約数和(自身を除く): 2190900

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 25, 30, 36, 38, 40, 45, 50, 57, 60, 72, 75, 76, 90, 95, 100, 114, 120, 125, 150, 152, 171, 180, 190, 200, 225, 228, 250, 285, 300, 342, 360, 375, 380, 450, 456, 475, 500, 570, 600, 625, 684, 750, 760, 855, 900, 950, 1000, 1125, 1140, 1250, 1368, 1425, 1500, 1710, 1800, 1875, 1900, 2250, 2280, 2375, 2500, 2850, 3000, 3420, 3750, 3800, 4275, 4500, 4750, 5000, 5625, 5700, 6840, 7125, 7500, 8550, 9000, 9500, 11250, 11400, 11875, 14250, 15000, 17100, 19000, 21375, 22500, 23750, 28500, 34200, 35625, 42750, 45000, 47500, 57000, 71250, 85500, 95000, 106875, 142500, 171000, 213750, 285000, 427500, 855000]

約数ペア:

[(1, 855000), (2, 427500), (3, 285000), (4, 213750), (5, 171000), (6, 142500), (8, 106875), (9, 95000), (10, 85500), (12, 71250), (15, 57000), (18, 47500), (19, 45000), (20, 42750), (24, 35625), (25, 34200), (30, 28500), (36, 23750), (38, 22500), (40, 21375), (45, 19000), (50, 17100), (57, 15000), (60, 14250), (72, 11875), (75, 11400), (76, 11250), (90, 9500), (95, 9000), (100, 8550), (114, 7500), (120, 7125), (125, 6840), (150, 5700), (152, 5625), (171, 5000), (180, 4750), (190, 4500), (200, 4275), (225, 3800), (228, 3750), (250, 3420), (285, 3000), (300, 2850), (342, 2500), (360, 2375), (375, 2280), (380, 2250), (450, 1900), (456, 1875), (475, 1800), (500, 1710), (570, 1500), (600, 1425), (625, 1368), (684, 1250), (750, 1140), (760, 1125), (855, 1000), (900, 950)]