19813500

素因数分解:

$2^2\times 3^2\times 5^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1$

素因数の和:86

約数の個数: 288

約数和(自身を含む): 77680512

約数和(自身を除く): 57867012

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 17, 18, 20, 21, 25, 28, 30, 34, 35, 36, 37, 42, 45, 50, 51, 60, 63, 68, 70, 74, 75, 84, 85, 90, 100, 102, 105, 111, 119, 125, 126, 140, 148, 150, 153, 170, 175, 180, 185, 204, 210, 222, 225, 238, 250, 252, 255, 259, 300, 306, 315, 333, 340, 350, 357, 370, 375, 420, 425, 444, 450, 476, 500, 510, 518, 525, 555, 595, 612, 629, 630, 666, 700, 714, 740, 750, 765, 777, 850, 875, 900, 925, 1020, 1036, 1050, 1071, 1110, 1125, 1190, 1258, 1260, 1275, 1295, 1332, 1428, 1500, 1530, 1554, 1575, 1665, 1700, 1750, 1785, 1850, 1887, 2100, 2125, 2142, 2220, 2250, 2331, 2380, 2516, 2550, 2590, 2625, 2775, 2975, 3060, 3108, 3145, 3150, 3330, 3500, 3570, 3700, 3774, 3825, 3885, 4250, 4284, 4403, 4500, 4625, 4662, 5100, 5180, 5250, 5355, 5550, 5661, 5950, 6290, 6300, 6375, 6475, 6660, 7140, 7548, 7650, 7770, 7875, 8325, 8500, 8806, 8925, 9250, 9324, 9435, 10500, 10710, 11100, 11322, 11655, 11900, 12580, 12750, 12950, 13209, 13875, 14875, 15300, 15540, 15725, 15750, 16650, 17612, 17850, 18500, 18870, 19125, 19425, 21420, 22015, 22644, 23310, 25500, 25900, 26418, 26775, 27750, 28305, 29750, 31450, 31500, 32375, 33300, 35700, 37740, 38250, 38850, 39627, 41625, 44030, 44625, 46620, 47175, 52836, 53550, 55500, 56610, 58275, 59500, 62900, 64750, 66045, 76500, 77700, 78625, 79254, 83250, 88060, 89250, 94350, 97125, 107100, 110075, 113220, 116550, 129500, 132090, 133875, 141525, 157250, 158508, 166500, 178500, 188700, 194250, 198135, 220150, 233100, 235875, 264180, 267750, 283050, 291375, 314500, 330225, 388500, 396270, 440300, 471750, 535500, 550375, 566100, 582750, 660450, 707625, 792540, 943500, 990675, 1100750, 1165500, 1320900, 1415250, 1651125, 1981350, 2201500, 2830500, 3302250, 3962700, 4953375, 6604500, 9906750, 19813500]

約数ペア:

[(1, 19813500), (2, 9906750), (3, 6604500), (4, 4953375), (5, 3962700), (6, 3302250), (7, 2830500), (9, 2201500), (10, 1981350), (12, 1651125), (14, 1415250), (15, 1320900), (17, 1165500), (18, 1100750), (20, 990675), (21, 943500), (25, 792540), (28, 707625), (30, 660450), (34, 582750), (35, 566100), (36, 550375), (37, 535500), (42, 471750), (45, 440300), (50, 396270), (51, 388500), (60, 330225), (63, 314500), (68, 291375), (70, 283050), (74, 267750), (75, 264180), (84, 235875), (85, 233100), (90, 220150), (100, 198135), (102, 194250), (105, 188700), (111, 178500), (119, 166500), (125, 158508), (126, 157250), (140, 141525), (148, 133875), (150, 132090), (153, 129500), (170, 116550), (175, 113220), (180, 110075), (185, 107100), (204, 97125), (210, 94350), (222, 89250), (225, 88060), (238, 83250), (250, 79254), (252, 78625), (255, 77700), (259, 76500), (300, 66045), (306, 64750), (315, 62900), (333, 59500), (340, 58275), (350, 56610), (357, 55500), (370, 53550), (375, 52836), (420, 47175), (425, 46620), (444, 44625), (450, 44030), (476, 41625), (500, 39627), (510, 38850), (518, 38250), (525, 37740), (555, 35700), (595, 33300), (612, 32375), (629, 31500), (630, 31450), (666, 29750), (700, 28305), (714, 27750), (740, 26775), (750, 26418), (765, 25900), (777, 25500), (850, 23310), (875, 22644), (900, 22015), (925, 21420), (1020, 19425), (1036, 19125), (1050, 18870), (1071, 18500), (1110, 17850), (1125, 17612), (1190, 16650), (1258, 15750), (1260, 15725), (1275, 15540), (1295, 15300), (1332, 14875), (1428, 13875), (1500, 13209), (1530, 12950), (1554, 12750), (1575, 12580), (1665, 11900), (1700, 11655), (1750, 11322), (1785, 11100), (1850, 10710), (1887, 10500), (2100, 9435), (2125, 9324), (2142, 9250), (2220, 8925), (2250, 8806), (2331, 8500), (2380, 8325), (2516, 7875), (2550, 7770), (2590, 7650), (2625, 7548), (2775, 7140), (2975, 6660), (3060, 6475), (3108, 6375), (3145, 6300), (3150, 6290), (3330, 5950), (3500, 5661), (3570, 5550), (3700, 5355), (3774, 5250), (3825, 5180), (3885, 5100), (4250, 4662), (4284, 4625), (4403, 4500)]