21491082400

素因数分解:

$2^5\times 5^2\times {\mathrm{19}}^1\times {\mathrm{461}}^1\times {\mathrm{3067}}^1$

素因数の和:3567

約数の個数: 144

約数和(自身を含む): 55364268960

約数和(自身を除く): 33873186560

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 32, 38, 40, 50, 76, 80, 95, 100, 152, 160, 190, 200, 304, 380, 400, 461, 475, 608, 760, 800, 922, 950, 1520, 1844, 1900, 2305, 3040, 3067, 3688, 3800, 4610, 6134, 7376, 7600, 8759, 9220, 11525, 12268, 14752, 15200, 15335, 17518, 18440, 23050, 24536, 30670, 35036, 36880, 43795, 46100, 49072, 58273, 61340, 70072, 73760, 76675, 87590, 92200, 98144, 116546, 122680, 140144, 153350, 175180, 184400, 218975, 233092, 245360, 280288, 291365, 306700, 350360, 368800, 437950, 466184, 490720, 582730, 613400, 700720, 875900, 932368, 1165460, 1226800, 1401440, 1413887, 1456825, 1751800, 1864736, 2330920, 2453600, 2827774, 2913650, 3503600, 4661840, 5655548, 5827300, 7007200, 7069435, 9323680, 11311096, 11654600, 14138870, 22622192, 23309200, 26863853, 28277740, 35347175, 45244384, 46618400, 53727706, 56555480, 70694350, 107455412, 113110960, 134319265, 141388700, 214910824, 226221920, 268638530, 282777400, 429821648, 537277060, 565554800, 671596325, 859643296, 1074554120, 1131109600, 1343192650, 2149108240, 2686385300, 4298216480, 5372770600, 10745541200, 21491082400]

約数ペア:

[(1, 21491082400), (2, 10745541200), (4, 5372770600), (5, 4298216480), (8, 2686385300), (10, 2149108240), (16, 1343192650), (19, 1131109600), (20, 1074554120), (25, 859643296), (32, 671596325), (38, 565554800), (40, 537277060), (50, 429821648), (76, 282777400), (80, 268638530), (95, 226221920), (100, 214910824), (152, 141388700), (160, 134319265), (190, 113110960), (200, 107455412), (304, 70694350), (380, 56555480), (400, 53727706), (461, 46618400), (475, 45244384), (608, 35347175), (760, 28277740), (800, 26863853), (922, 23309200), (950, 22622192), (1520, 14138870), (1844, 11654600), (1900, 11311096), (2305, 9323680), (3040, 7069435), (3067, 7007200), (3688, 5827300), (3800, 5655548), (4610, 4661840), (6134, 3503600), (7376, 2913650), (7600, 2827774), (8759, 2453600), (9220, 2330920), (11525, 1864736), (12268, 1751800), (14752, 1456825), (15200, 1413887), (15335, 1401440), (17518, 1226800), (18440, 1165460), (23050, 932368), (24536, 875900), (30670, 700720), (35036, 613400), (36880, 582730), (43795, 490720), (46100, 466184), (49072, 437950), (58273, 368800), (61340, 350360), (70072, 306700), (73760, 291365), (76675, 280288), (87590, 245360), (92200, 233092), (98144, 218975), (116546, 184400), (122680, 175180), (140144, 153350)]