1820103040

素因数分解:

$2^7\times 5^1\times 7^2\times {\mathrm{127}}^1\times {\mathrm{457}}^1$

素因数の和:617

約数の個数: 192

約数和(自身を含む): 5112599040

約数和(自身を除く): 3292496000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 127, 128, 140, 160, 196, 224, 245, 254, 280, 320, 392, 448, 457, 490, 508, 560, 635, 640, 784, 889, 896, 914, 980, 1016, 1120, 1270, 1568, 1778, 1828, 1960, 2032, 2240, 2285, 2540, 3136, 3199, 3556, 3656, 3920, 4064, 4445, 4480, 4570, 5080, 6223, 6272, 6398, 7112, 7312, 7840, 8128, 8890, 9140, 10160, 12446, 12796, 14224, 14624, 15680, 15995, 16256, 17780, 18280, 20320, 22393, 24892, 25592, 28448, 29248, 31115, 31360, 31990, 35560, 36560, 40640, 44786, 49784, 51184, 56896, 58039, 58496, 62230, 63980, 71120, 73120, 81280, 89572, 99568, 102368, 111965, 113792, 116078, 124460, 127960, 142240, 146240, 179144, 199136, 204736, 223930, 232156, 248920, 255920, 284480, 290195, 292480, 358288, 398272, 406273, 409472, 447860, 464312, 497840, 511840, 568960, 580390, 716576, 796544, 812546, 895720, 928624, 995680, 1023680, 1160780, 1433152, 1625092, 1791440, 1857248, 1991360, 2031365, 2047360, 2321560, 2843911, 2866304, 3250184, 3582880, 3714496, 3982720, 4062730, 4643120, 5687822, 6500368, 7165760, 7428992, 8125460, 9286240, 11375644, 13000736, 14219555, 14331520, 16250920, 18572480, 22751288, 26001472, 28439110, 32501840, 37144960, 45502576, 52002944, 56878220, 65003680, 91005152, 113756440, 130007360, 182010304, 227512880, 260014720, 364020608, 455025760, 910051520, 1820103040]

約数ペア:

[(1, 1820103040), (2, 910051520), (4, 455025760), (5, 364020608), (7, 260014720), (8, 227512880), (10, 182010304), (14, 130007360), (16, 113756440), (20, 91005152), (28, 65003680), (32, 56878220), (35, 52002944), (40, 45502576), (49, 37144960), (56, 32501840), (64, 28439110), (70, 26001472), (80, 22751288), (98, 18572480), (112, 16250920), (127, 14331520), (128, 14219555), (140, 13000736), (160, 11375644), (196, 9286240), (224, 8125460), (245, 7428992), (254, 7165760), (280, 6500368), (320, 5687822), (392, 4643120), (448, 4062730), (457, 3982720), (490, 3714496), (508, 3582880), (560, 3250184), (635, 2866304), (640, 2843911), (784, 2321560), (889, 2047360), (896, 2031365), (914, 1991360), (980, 1857248), (1016, 1791440), (1120, 1625092), (1270, 1433152), (1568, 1160780), (1778, 1023680), (1828, 995680), (1960, 928624), (2032, 895720), (2240, 812546), (2285, 796544), (2540, 716576), (3136, 580390), (3199, 568960), (3556, 511840), (3656, 497840), (3920, 464312), (4064, 447860), (4445, 409472), (4480, 406273), (4570, 398272), (5080, 358288), (6223, 292480), (6272, 290195), (6398, 284480), (7112, 255920), (7312, 248920), (7840, 232156), (8128, 223930), (8890, 204736), (9140, 199136), (10160, 179144), (12446, 146240), (12796, 142240), (14224, 127960), (14624, 124460), (15680, 116078), (15995, 113792), (16256, 111965), (17780, 102368), (18280, 99568), (20320, 89572), (22393, 81280), (24892, 73120), (25592, 71120), (28448, 63980), (29248, 62230), (31115, 58496), (31360, 58039), (31990, 56896), (35560, 51184), (36560, 49784), (40640, 44786)]