21375000

素因数分解:

$2^3\times 3^2\times 5^6\times {\mathrm{19}}^1$

素因数の和:61

約数の個数: 168

約数和(自身を含む): 76170900

約数和(自身を除く): 54795900

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, 3125, 3420, 3750, 3800, 4275, 4500, 4750, 5000, 5625, 5700, 6250, 6840, 7125, 7500, 8550, 9000, 9375, 9500, 11250, 11400, 11875, 12500, 14250, 15000, 15625, 17100, 18750, 19000, 21375, 22500, 23750, 25000, 28125, 28500, 31250, 34200, 35625, 37500, 42750, 45000, 46875, 47500, 56250, 57000, 59375, 62500, 71250, 75000, 85500, 93750, 95000, 106875, 112500, 118750, 125000, 140625, 142500, 171000, 178125, 187500, 213750, 225000, 237500, 281250, 285000, 296875, 356250, 375000, 427500, 475000, 534375, 562500, 593750, 712500, 855000, 890625, 1068750, 1125000, 1187500, 1425000, 1781250, 2137500, 2375000, 2671875, 3562500, 4275000, 5343750, 7125000, 10687500, 21375000]

約数ペア:

[(1, 21375000), (2, 10687500), (3, 7125000), (4, 5343750), (5, 4275000), (6, 3562500), (8, 2671875), (9, 2375000), (10, 2137500), (12, 1781250), (15, 1425000), (18, 1187500), (19, 1125000), (20, 1068750), (24, 890625), (25, 855000), (30, 712500), (36, 593750), (38, 562500), (40, 534375), (45, 475000), (50, 427500), (57, 375000), (60, 356250), (72, 296875), (75, 285000), (76, 281250), (90, 237500), (95, 225000), (100, 213750), (114, 187500), (120, 178125), (125, 171000), (150, 142500), (152, 140625), (171, 125000), (180, 118750), (190, 112500), (200, 106875), (225, 95000), (228, 93750), (250, 85500), (285, 75000), (300, 71250), (342, 62500), (360, 59375), (375, 57000), (380, 56250), (450, 47500), (456, 46875), (475, 45000), (500, 42750), (570, 37500), (600, 35625), (625, 34200), (684, 31250), (750, 28500), (760, 28125), (855, 25000), (900, 23750), (950, 22500), (1000, 21375), (1125, 19000), (1140, 18750), (1250, 17100), (1368, 15625), (1425, 15000), (1500, 14250), (1710, 12500), (1800, 11875), (1875, 11400), (1900, 11250), (2250, 9500), (2280, 9375), (2375, 9000), (2500, 8550), (2850, 7500), (3000, 7125), (3125, 6840), (3420, 6250), (3750, 5700), (3800, 5625), (4275, 5000), (4500, 4750)]