20988000

素因数分解:

$2^5\times 3^2\times 5^3\times {\mathrm{11}}^1\times {\mathrm{53}}^1$

素因数の和:95

約数の個数: 288

約数和(自身を含む): 82791072

約数和(自身を除く): 61803072

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 25, 30, 32, 33, 36, 40, 44, 45, 48, 50, 53, 55, 60, 66, 72, 75, 80, 88, 90, 96, 99, 100, 106, 110, 120, 125, 132, 144, 150, 159, 160, 165, 176, 180, 198, 200, 212, 220, 225, 240, 250, 264, 265, 275, 288, 300, 318, 330, 352, 360, 375, 396, 400, 424, 440, 450, 477, 480, 495, 500, 528, 530, 550, 583, 600, 636, 660, 720, 750, 792, 795, 800, 825, 848, 880, 900, 954, 990, 1000, 1056, 1060, 1100, 1125, 1166, 1200, 1272, 1320, 1325, 1375, 1440, 1500, 1584, 1590, 1650, 1696, 1749, 1760, 1800, 1908, 1980, 2000, 2120, 2200, 2250, 2332, 2385, 2400, 2475, 2544, 2640, 2650, 2750, 2915, 3000, 3168, 3180, 3300, 3498, 3600, 3816, 3960, 3975, 4000, 4125, 4240, 4400, 4500, 4664, 4770, 4950, 5088, 5247, 5280, 5300, 5500, 5830, 6000, 6360, 6600, 6625, 6996, 7200, 7632, 7920, 7950, 8250, 8480, 8745, 8800, 9000, 9328, 9540, 9900, 10494, 10600, 11000, 11660, 11925, 12000, 12375, 12720, 13200, 13250, 13992, 14575, 15264, 15840, 15900, 16500, 17490, 18000, 18656, 19080, 19800, 19875, 20988, 21200, 22000, 23320, 23850, 24750, 25440, 26235, 26400, 26500, 27984, 29150, 31800, 33000, 34980, 36000, 38160, 39600, 39750, 41976, 42400, 43725, 44000, 46640, 47700, 49500, 52470, 53000, 55968, 58300, 59625, 63600, 66000, 69960, 72875, 76320, 79200, 79500, 83952, 87450, 93280, 95400, 99000, 104940, 106000, 116600, 119250, 127200, 131175, 132000, 139920, 145750, 159000, 167904, 174900, 190800, 198000, 209880, 212000, 218625, 233200, 238500, 262350, 279840, 291500, 318000, 349800, 381600, 396000, 419760, 437250, 466400, 477000, 524700, 583000, 636000, 655875, 699600, 839520, 874500, 954000, 1049400, 1166000, 1311750, 1399200, 1749000, 1908000, 2098800, 2332000, 2623500, 3498000, 4197600, 5247000, 6996000, 10494000, 20988000]

約数ペア:

[(1, 20988000), (2, 10494000), (3, 6996000), (4, 5247000), (5, 4197600), (6, 3498000), (8, 2623500), (9, 2332000), (10, 2098800), (11, 1908000), (12, 1749000), (15, 1399200), (16, 1311750), (18, 1166000), (20, 1049400), (22, 954000), (24, 874500), (25, 839520), (30, 699600), (32, 655875), (33, 636000), (36, 583000), (40, 524700), (44, 477000), (45, 466400), (48, 437250), (50, 419760), (53, 396000), (55, 381600), (60, 349800), (66, 318000), (72, 291500), (75, 279840), (80, 262350), (88, 238500), (90, 233200), (96, 218625), (99, 212000), (100, 209880), (106, 198000), (110, 190800), (120, 174900), (125, 167904), (132, 159000), (144, 145750), (150, 139920), (159, 132000), (160, 131175), (165, 127200), (176, 119250), (180, 116600), (198, 106000), (200, 104940), (212, 99000), (220, 95400), (225, 93280), (240, 87450), (250, 83952), (264, 79500), (265, 79200), (275, 76320), (288, 72875), (300, 69960), (318, 66000), (330, 63600), (352, 59625), (360, 58300), (375, 55968), (396, 53000), (400, 52470), (424, 49500), (440, 47700), (450, 46640), (477, 44000), (480, 43725), (495, 42400), (500, 41976), (528, 39750), (530, 39600), (550, 38160), (583, 36000), (600, 34980), (636, 33000), (660, 31800), (720, 29150), (750, 27984), (792, 26500), (795, 26400), (800, 26235), (825, 25440), (848, 24750), (880, 23850), (900, 23320), (954, 22000), (990, 21200), (1000, 20988), (1056, 19875), (1060, 19800), (1100, 19080), (1125, 18656), (1166, 18000), (1200, 17490), (1272, 16500), (1320, 15900), (1325, 15840), (1375, 15264), (1440, 14575), (1500, 13992), (1584, 13250), (1590, 13200), (1650, 12720), (1696, 12375), (1749, 12000), (1760, 11925), (1800, 11660), (1908, 11000), (1980, 10600), (2000, 10494), (2120, 9900), (2200, 9540), (2250, 9328), (2332, 9000), (2385, 8800), (2400, 8745), (2475, 8480), (2544, 8250), (2640, 7950), (2650, 7920), (2750, 7632), (2915, 7200), (3000, 6996), (3168, 6625), (3180, 6600), (3300, 6360), (3498, 6000), (3600, 5830), (3816, 5500), (3960, 5300), (3975, 5280), (4000, 5247), (4125, 5088), (4240, 4950), (4400, 4770), (4500, 4664)]