21001800

素因数分解:

$2^3\times 3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1$

素因数の和:136

約数の個数: 192

約数和(自身を含む): 72316800

約数和(自身を除く): 51315000

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 25, 29, 30, 34, 40, 50, 51, 58, 60, 68, 71, 75, 85, 87, 100, 102, 116, 120, 136, 142, 145, 150, 170, 174, 200, 204, 213, 232, 255, 284, 290, 300, 340, 348, 355, 408, 425, 426, 435, 493, 510, 568, 580, 600, 680, 696, 710, 725, 850, 852, 870, 986, 1020, 1065, 1160, 1207, 1275, 1420, 1450, 1479, 1700, 1704, 1740, 1775, 1972, 2040, 2059, 2130, 2175, 2414, 2465, 2550, 2840, 2900, 2958, 3400, 3480, 3550, 3621, 3944, 4118, 4260, 4350, 4828, 4930, 5100, 5325, 5800, 5916, 6035, 6177, 7100, 7242, 7395, 8236, 8520, 8700, 9656, 9860, 10200, 10295, 10650, 11832, 12070, 12325, 12354, 14200, 14484, 14790, 16472, 17400, 18105, 19720, 20590, 21300, 24140, 24650, 24708, 28968, 29580, 30175, 30885, 35003, 36210, 36975, 41180, 42600, 48280, 49300, 49416, 51475, 59160, 60350, 61770, 70006, 72420, 73950, 82360, 90525, 98600, 102950, 105009, 120700, 123540, 140012, 144840, 147900, 154425, 175015, 181050, 205900, 210018, 241400, 247080, 280024, 295800, 308850, 350030, 362100, 411800, 420036, 525045, 617700, 700060, 724200, 840072, 875075, 1050090, 1235400, 1400120, 1750150, 2100180, 2625225, 3500300, 4200360, 5250450, 7000600, 10500900, 21001800]

約数ペア:

[(1, 21001800), (2, 10500900), (3, 7000600), (4, 5250450), (5, 4200360), (6, 3500300), (8, 2625225), (10, 2100180), (12, 1750150), (15, 1400120), (17, 1235400), (20, 1050090), (24, 875075), (25, 840072), (29, 724200), (30, 700060), (34, 617700), (40, 525045), (50, 420036), (51, 411800), (58, 362100), (60, 350030), (68, 308850), (71, 295800), (75, 280024), (85, 247080), (87, 241400), (100, 210018), (102, 205900), (116, 181050), (120, 175015), (136, 154425), (142, 147900), (145, 144840), (150, 140012), (170, 123540), (174, 120700), (200, 105009), (204, 102950), (213, 98600), (232, 90525), (255, 82360), (284, 73950), (290, 72420), (300, 70006), (340, 61770), (348, 60350), (355, 59160), (408, 51475), (425, 49416), (426, 49300), (435, 48280), (493, 42600), (510, 41180), (568, 36975), (580, 36210), (600, 35003), (680, 30885), (696, 30175), (710, 29580), (725, 28968), (850, 24708), (852, 24650), (870, 24140), (986, 21300), (1020, 20590), (1065, 19720), (1160, 18105), (1207, 17400), (1275, 16472), (1420, 14790), (1450, 14484), (1479, 14200), (1700, 12354), (1704, 12325), (1740, 12070), (1775, 11832), (1972, 10650), (2040, 10295), (2059, 10200), (2130, 9860), (2175, 9656), (2414, 8700), (2465, 8520), (2550, 8236), (2840, 7395), (2900, 7242), (2958, 7100), (3400, 6177), (3480, 6035), (3550, 5916), (3621, 5800), (3944, 5325), (4118, 5100), (4260, 4930), (4350, 4828)]