20571828480

素因数分解:

$2^8\times 3^2\times 5^1\times 7^1\times {\mathrm{255107}}^1$

素因数の和:255141

約数の個数: 216

約数和(自身を含む): 81344757312

約数和(自身を除く): 60772928832

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 128, 140, 144, 160, 168, 180, 192, 210, 224, 240, 252, 256, 280, 288, 315, 320, 336, 360, 384, 420, 448, 480, 504, 560, 576, 630, 640, 672, 720, 768, 840, 896, 960, 1008, 1120, 1152, 1260, 1280, 1344, 1440, 1680, 1792, 1920, 2016, 2240, 2304, 2520, 2688, 2880, 3360, 3840, 4032, 4480, 5040, 5376, 5760, 6720, 8064, 8960, 10080, 11520, 13440, 16128, 20160, 26880, 40320, 80640, 255107, 510214, 765321, 1020428, 1275535, 1530642, 1785749, 2040856, 2295963, 2551070, 3061284, 3571498, 3826605, 4081712, 4591926, 5102140, 5357247, 6122568, 7142996, 7653210, 8163424, 8928745, 9183852, 10204280, 10714494, 11479815, 12245136, 14285992, 15306420, 16071741, 16326848, 17857490, 18367704, 20408560, 21428988, 22959630, 24490272, 26786235, 28571984, 30612840, 32143482, 32653696, 35714980, 36735408, 40817120, 42857976, 45919260, 48980544, 53572470, 57143968, 61225680, 64286964, 65307392, 71429960, 73470816, 80358705, 81634240, 85715952, 91838520, 97961088, 107144940, 114287936, 122451360, 128573928, 142859920, 146941632, 160717410, 163268480, 171431904, 183677040, 195922176, 214289880, 228575872, 244902720, 257147856, 285719840, 293883264, 321434820, 326536960, 342863808, 367354080, 428579760, 457151744, 489805440, 514295712, 571439680, 587766528, 642869640, 685727616, 734708160, 857159520, 979610880, 1028591424, 1142879360, 1285739280, 1371455232, 1469416320, 1714319040, 2057182848, 2285758720, 2571478560, 2938832640, 3428638080, 4114365696, 5142957120, 6857276160, 10285914240, 20571828480]

約数ペア:

[(1, 20571828480), (2, 10285914240), (3, 6857276160), (4, 5142957120), (5, 4114365696), (6, 3428638080), (7, 2938832640), (8, 2571478560), (9, 2285758720), (10, 2057182848), (12, 1714319040), (14, 1469416320), (15, 1371455232), (16, 1285739280), (18, 1142879360), (20, 1028591424), (21, 979610880), (24, 857159520), (28, 734708160), (30, 685727616), (32, 642869640), (35, 587766528), (36, 571439680), (40, 514295712), (42, 489805440), (45, 457151744), (48, 428579760), (56, 367354080), (60, 342863808), (63, 326536960), (64, 321434820), (70, 293883264), (72, 285719840), (80, 257147856), (84, 244902720), (90, 228575872), (96, 214289880), (105, 195922176), (112, 183677040), (120, 171431904), (126, 163268480), (128, 160717410), (140, 146941632), (144, 142859920), (160, 128573928), (168, 122451360), (180, 114287936), (192, 107144940), (210, 97961088), (224, 91838520), (240, 85715952), (252, 81634240), (256, 80358705), (280, 73470816), (288, 71429960), (315, 65307392), (320, 64286964), (336, 61225680), (360, 57143968), (384, 53572470), (420, 48980544), (448, 45919260), (480, 42857976), (504, 40817120), (560, 36735408), (576, 35714980), (630, 32653696), (640, 32143482), (672, 30612840), (720, 28571984), (768, 26786235), (840, 24490272), (896, 22959630), (960, 21428988), (1008, 20408560), (1120, 18367704), (1152, 17857490), (1260, 16326848), (1280, 16071741), (1344, 15306420), (1440, 14285992), (1680, 12245136), (1792, 11479815), (1920, 10714494), (2016, 10204280), (2240, 9183852), (2304, 8928745), (2520, 8163424), (2688, 7653210), (2880, 7142996), (3360, 6122568), (3840, 5357247), (4032, 5102140), (4480, 4591926), (5040, 4081712), (5376, 3826605), (5760, 3571498), (6720, 3061284), (8064, 2551070), (8960, 2295963), (10080, 2040856), (11520, 1785749), (13440, 1530642), (16128, 1275535), (20160, 1020428), (26880, 765321), (40320, 510214), (80640, 255107)]