21691800

素因数分解:

$2^3\times 3^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{103}}^1$

素因数の和:144

約数の個数: 240

約数和(自身を含む): 81921840

約数和(自身を除く): 60230040

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 25, 26, 27, 30, 36, 39, 40, 45, 50, 52, 54, 60, 65, 72, 75, 78, 81, 90, 100, 103, 104, 108, 117, 120, 130, 135, 150, 156, 162, 180, 195, 200, 206, 216, 225, 234, 260, 270, 300, 309, 312, 324, 325, 351, 360, 390, 405, 412, 450, 468, 515, 520, 540, 585, 600, 618, 648, 650, 675, 702, 780, 810, 824, 900, 927, 936, 975, 1030, 1053, 1080, 1170, 1236, 1300, 1339, 1350, 1404, 1545, 1560, 1620, 1755, 1800, 1854, 1950, 2025, 2060, 2106, 2340, 2472, 2575, 2600, 2678, 2700, 2781, 2808, 2925, 3090, 3240, 3510, 3708, 3900, 4017, 4050, 4120, 4212, 4635, 4680, 5150, 5265, 5356, 5400, 5562, 5850, 6180, 6695, 7020, 7416, 7725, 7800, 8034, 8100, 8343, 8424, 8775, 9270, 10300, 10530, 10712, 11124, 11700, 12051, 12360, 13390, 13905, 14040, 15450, 16068, 16200, 16686, 17550, 18540, 20085, 20600, 21060, 22248, 23175, 23400, 24102, 26325, 26780, 27810, 30900, 32136, 33372, 33475, 35100, 36153, 37080, 40170, 41715, 42120, 46350, 48204, 52650, 53560, 55620, 60255, 61800, 66744, 66950, 69525, 70200, 72306, 80340, 83430, 92700, 96408, 100425, 105300, 108459, 111240, 120510, 133900, 139050, 144612, 160680, 166860, 180765, 185400, 200850, 208575, 210600, 216918, 241020, 267800, 278100, 289224, 301275, 333720, 361530, 401700, 417150, 433836, 482040, 542295, 556200, 602550, 723060, 803400, 834300, 867672, 903825, 1084590, 1205100, 1446120, 1668600, 1807650, 2169180, 2410200, 2711475, 3615300, 4338360, 5422950, 7230600, 10845900, 21691800]

約数ペア:

[(1, 21691800), (2, 10845900), (3, 7230600), (4, 5422950), (5, 4338360), (6, 3615300), (8, 2711475), (9, 2410200), (10, 2169180), (12, 1807650), (13, 1668600), (15, 1446120), (18, 1205100), (20, 1084590), (24, 903825), (25, 867672), (26, 834300), (27, 803400), (30, 723060), (36, 602550), (39, 556200), (40, 542295), (45, 482040), (50, 433836), (52, 417150), (54, 401700), (60, 361530), (65, 333720), (72, 301275), (75, 289224), (78, 278100), (81, 267800), (90, 241020), (100, 216918), (103, 210600), (104, 208575), (108, 200850), (117, 185400), (120, 180765), (130, 166860), (135, 160680), (150, 144612), (156, 139050), (162, 133900), (180, 120510), (195, 111240), (200, 108459), (206, 105300), (216, 100425), (225, 96408), (234, 92700), (260, 83430), (270, 80340), (300, 72306), (309, 70200), (312, 69525), (324, 66950), (325, 66744), (351, 61800), (360, 60255), (390, 55620), (405, 53560), (412, 52650), (450, 48204), (468, 46350), (515, 42120), (520, 41715), (540, 40170), (585, 37080), (600, 36153), (618, 35100), (648, 33475), (650, 33372), (675, 32136), (702, 30900), (780, 27810), (810, 26780), (824, 26325), (900, 24102), (927, 23400), (936, 23175), (975, 22248), (1030, 21060), (1053, 20600), (1080, 20085), (1170, 18540), (1236, 17550), (1300, 16686), (1339, 16200), (1350, 16068), (1404, 15450), (1545, 14040), (1560, 13905), (1620, 13390), (1755, 12360), (1800, 12051), (1854, 11700), (1950, 11124), (2025, 10712), (2060, 10530), (2106, 10300), (2340, 9270), (2472, 8775), (2575, 8424), (2600, 8343), (2678, 8100), (2700, 8034), (2781, 7800), (2808, 7725), (2925, 7416), (3090, 7020), (3240, 6695), (3510, 6180), (3708, 5850), (3900, 5562), (4017, 5400), (4050, 5356), (4120, 5265), (4212, 5150), (4635, 4680)]