20784204800

素因数分解:

$2^{10}\times 5^2\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{239}}^1$

素因数の和:391

約数の個数: 264

約数和(自身を含む): 53608473600

約数和(自身を除く): 32824268800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 43, 50, 64, 79, 80, 86, 100, 128, 158, 160, 172, 200, 215, 239, 256, 316, 320, 344, 395, 400, 430, 478, 512, 632, 640, 688, 790, 800, 860, 956, 1024, 1075, 1195, 1264, 1280, 1376, 1580, 1600, 1720, 1912, 1975, 2150, 2390, 2528, 2560, 2752, 3160, 3200, 3397, 3440, 3824, 3950, 4300, 4780, 5056, 5120, 5504, 5975, 6320, 6400, 6794, 6880, 7648, 7900, 8600, 9560, 10112, 10277, 11008, 11950, 12640, 12800, 13588, 13760, 15296, 15800, 16985, 17200, 18881, 19120, 20224, 20554, 22016, 23900, 25280, 25600, 27176, 27520, 30592, 31600, 33970, 34400, 37762, 38240, 40448, 41108, 44032, 47800, 50560, 51385, 54352, 55040, 61184, 63200, 67940, 68800, 75524, 76480, 80896, 82216, 84925, 94405, 95600, 101120, 102770, 108704, 110080, 122368, 126400, 135880, 137600, 151048, 152960, 164432, 169850, 188810, 191200, 202240, 205540, 217408, 220160, 244736, 252800, 256925, 271760, 275200, 302096, 305920, 328864, 339700, 377620, 382400, 404480, 411080, 434816, 472025, 505600, 513850, 543520, 550400, 604192, 611840, 657728, 679400, 755240, 764800, 811883, 822160, 869632, 944050, 1011200, 1027700, 1087040, 1100800, 1208384, 1223680, 1315456, 1358800, 1510480, 1529600, 1623766, 1644320, 1739264, 1888100, 2022400, 2055400, 2174080, 2416768, 2630912, 2717600, 3020960, 3059200, 3247532, 3288640, 3478528, 3776200, 4059415, 4110800, 4348160, 4833536, 5261824, 5435200, 6041920, 6118400, 6495064, 6577280, 7552400, 8118830, 8221600, 8696320, 9667072, 10523648, 10870400, 12083840, 12990128, 13154560, 15104800, 16237660, 16443200, 17392640, 19334144, 20297075, 21740800, 24167680, 25980256, 26309120, 30209600, 32475320, 32886400, 40594150, 43481600, 48335360, 51960512, 52618240, 60419200, 64950640, 65772800, 81188300, 86963200, 96670720, 103921024, 120838400, 129901280, 131545600, 162376600, 207842048, 241676800, 259802560, 263091200, 324753200, 415684096, 483353600, 519605120, 649506400, 831368192, 1039210240, 1299012800, 2078420480, 2598025600, 4156840960, 5196051200, 10392102400, 20784204800]

約数ペア:

[(1, 20784204800), (2, 10392102400), (4, 5196051200), (5, 4156840960), (8, 2598025600), (10, 2078420480), (16, 1299012800), (20, 1039210240), (25, 831368192), (32, 649506400), (40, 519605120), (43, 483353600), (50, 415684096), (64, 324753200), (79, 263091200), (80, 259802560), (86, 241676800), (100, 207842048), (128, 162376600), (158, 131545600), (160, 129901280), (172, 120838400), (200, 103921024), (215, 96670720), (239, 86963200), (256, 81188300), (316, 65772800), (320, 64950640), (344, 60419200), (395, 52618240), (400, 51960512), (430, 48335360), (478, 43481600), (512, 40594150), (632, 32886400), (640, 32475320), (688, 30209600), (790, 26309120), (800, 25980256), (860, 24167680), (956, 21740800), (1024, 20297075), (1075, 19334144), (1195, 17392640), (1264, 16443200), (1280, 16237660), (1376, 15104800), (1580, 13154560), (1600, 12990128), (1720, 12083840), (1912, 10870400), (1975, 10523648), (2150, 9667072), (2390, 8696320), (2528, 8221600), (2560, 8118830), (2752, 7552400), (3160, 6577280), (3200, 6495064), (3397, 6118400), (3440, 6041920), (3824, 5435200), (3950, 5261824), (4300, 4833536), (4780, 4348160), (5056, 4110800), (5120, 4059415), (5504, 3776200), (5975, 3478528), (6320, 3288640), (6400, 3247532), (6794, 3059200), (6880, 3020960), (7648, 2717600), (7900, 2630912), (8600, 2416768), (9560, 2174080), (10112, 2055400), (10277, 2022400), (11008, 1888100), (11950, 1739264), (12640, 1644320), (12800, 1623766), (13588, 1529600), (13760, 1510480), (15296, 1358800), (15800, 1315456), (16985, 1223680), (17200, 1208384), (18881, 1100800), (19120, 1087040), (20224, 1027700), (20554, 1011200), (22016, 944050), (23900, 869632), (25280, 822160), (25600, 811883), (27176, 764800), (27520, 755240), (30592, 679400), (31600, 657728), (33970, 611840), (34400, 604192), (37762, 550400), (38240, 543520), (40448, 513850), (41108, 505600), (44032, 472025), (47800, 434816), (50560, 411080), (51385, 404480), (54352, 382400), (55040, 377620), (61184, 339700), (63200, 328864), (67940, 305920), (68800, 302096), (75524, 275200), (76480, 271760), (80896, 256925), (82216, 252800), (84925, 244736), (94405, 220160), (95600, 217408), (101120, 205540), (102770, 202240), (108704, 191200), (110080, 188810), (122368, 169850), (126400, 164432), (135880, 152960), (137600, 151048)]