21777840

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1$

素因数の和:204

約数の個数: 240

約数和(自身を含む): 87048000

約数和(自身を除く): 65270160

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 29, 30, 35, 36, 40, 42, 45, 48, 56, 58, 60, 63, 70, 72, 80, 84, 87, 90, 105, 112, 116, 120, 126, 140, 144, 145, 149, 168, 174, 180, 203, 210, 232, 240, 252, 261, 280, 290, 298, 315, 336, 348, 360, 406, 420, 435, 447, 464, 504, 522, 560, 580, 596, 609, 630, 696, 720, 745, 812, 840, 870, 894, 1008, 1015, 1043, 1044, 1160, 1192, 1218, 1260, 1305, 1341, 1392, 1490, 1624, 1680, 1740, 1788, 1827, 2030, 2086, 2088, 2235, 2320, 2384, 2436, 2520, 2610, 2682, 2980, 3045, 3129, 3248, 3480, 3576, 3654, 4060, 4172, 4176, 4321, 4470, 4872, 5040, 5215, 5220, 5364, 5960, 6090, 6258, 6705, 6960, 7152, 7308, 8120, 8344, 8642, 8940, 9135, 9387, 9744, 10430, 10440, 10728, 11920, 12180, 12516, 12963, 13410, 14616, 15645, 16240, 16688, 17284, 17880, 18270, 18774, 20860, 20880, 21456, 21605, 24360, 25032, 25926, 26820, 29232, 30247, 31290, 34568, 35760, 36540, 37548, 38889, 41720, 43210, 46935, 48720, 50064, 51852, 53640, 60494, 62580, 64815, 69136, 73080, 75096, 77778, 83440, 86420, 90741, 93870, 103704, 107280, 120988, 125160, 129630, 146160, 150192, 151235, 155556, 172840, 181482, 187740, 194445, 207408, 241976, 250320, 259260, 272223, 302470, 311112, 345680, 362964, 375480, 388890, 453705, 483952, 518520, 544446, 604940, 622224, 725928, 750960, 777780, 907410, 1037040, 1088892, 1209880, 1361115, 1451856, 1555560, 1814820, 2177784, 2419760, 2722230, 3111120, 3629640, 4355568, 5444460, 7259280, 10888920, 21777840]

約数ペア:

[(1, 21777840), (2, 10888920), (3, 7259280), (4, 5444460), (5, 4355568), (6, 3629640), (7, 3111120), (8, 2722230), (9, 2419760), (10, 2177784), (12, 1814820), (14, 1555560), (15, 1451856), (16, 1361115), (18, 1209880), (20, 1088892), (21, 1037040), (24, 907410), (28, 777780), (29, 750960), (30, 725928), (35, 622224), (36, 604940), (40, 544446), (42, 518520), (45, 483952), (48, 453705), (56, 388890), (58, 375480), (60, 362964), (63, 345680), (70, 311112), (72, 302470), (80, 272223), (84, 259260), (87, 250320), (90, 241976), (105, 207408), (112, 194445), (116, 187740), (120, 181482), (126, 172840), (140, 155556), (144, 151235), (145, 150192), (149, 146160), (168, 129630), (174, 125160), (180, 120988), (203, 107280), (210, 103704), (232, 93870), (240, 90741), (252, 86420), (261, 83440), (280, 77778), (290, 75096), (298, 73080), (315, 69136), (336, 64815), (348, 62580), (360, 60494), (406, 53640), (420, 51852), (435, 50064), (447, 48720), (464, 46935), (504, 43210), (522, 41720), (560, 38889), (580, 37548), (596, 36540), (609, 35760), (630, 34568), (696, 31290), (720, 30247), (745, 29232), (812, 26820), (840, 25926), (870, 25032), (894, 24360), (1008, 21605), (1015, 21456), (1043, 20880), (1044, 20860), (1160, 18774), (1192, 18270), (1218, 17880), (1260, 17284), (1305, 16688), (1341, 16240), (1392, 15645), (1490, 14616), (1624, 13410), (1680, 12963), (1740, 12516), (1788, 12180), (1827, 11920), (2030, 10728), (2086, 10440), (2088, 10430), (2235, 9744), (2320, 9387), (2384, 9135), (2436, 8940), (2520, 8642), (2610, 8344), (2682, 8120), (2980, 7308), (3045, 7152), (3129, 6960), (3248, 6705), (3480, 6258), (3576, 6090), (3654, 5960), (4060, 5364), (4172, 5220), (4176, 5215), (4321, 5040), (4470, 4872)]