20117760

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1$

素因数の和:81

約数の個数: 216

約数和(自身を含む): 71817984

約数和(自身を除く): 51700224

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 31, 32, 39, 40, 48, 52, 60, 62, 64, 65, 78, 80, 93, 96, 104, 120, 124, 128, 130, 155, 156, 160, 169, 186, 192, 195, 208, 240, 248, 256, 260, 310, 312, 320, 338, 372, 384, 390, 403, 416, 465, 480, 496, 507, 520, 620, 624, 640, 676, 744, 768, 780, 806, 832, 845, 930, 960, 992, 1014, 1040, 1209, 1240, 1248, 1280, 1352, 1488, 1560, 1612, 1664, 1690, 1860, 1920, 1984, 2015, 2028, 2080, 2418, 2480, 2496, 2535, 2704, 2976, 3120, 3224, 3328, 3380, 3720, 3840, 3968, 4030, 4056, 4160, 4836, 4960, 4992, 5070, 5239, 5408, 5952, 6045, 6240, 6448, 6760, 7440, 7936, 8060, 8112, 8320, 9672, 9920, 9984, 10140, 10478, 10816, 11904, 12090, 12480, 12896, 13520, 14880, 15717, 16120, 16224, 16640, 19344, 19840, 20280, 20956, 21632, 23808, 24180, 24960, 25792, 26195, 27040, 29760, 31434, 32240, 32448, 38688, 39680, 40560, 41912, 43264, 48360, 49920, 51584, 52390, 54080, 59520, 62868, 64480, 64896, 77376, 78585, 81120, 83824, 96720, 103168, 104780, 108160, 119040, 125736, 128960, 129792, 154752, 157170, 162240, 167648, 193440, 209560, 216320, 251472, 257920, 309504, 314340, 324480, 335296, 386880, 419120, 502944, 515840, 628680, 648960, 670592, 773760, 838240, 1005888, 1257360, 1341184, 1547520, 1676480, 2011776, 2514720, 3352960, 4023552, 5029440, 6705920, 10058880, 20117760]

約数ペア:

[(1, 20117760), (2, 10058880), (3, 6705920), (4, 5029440), (5, 4023552), (6, 3352960), (8, 2514720), (10, 2011776), (12, 1676480), (13, 1547520), (15, 1341184), (16, 1257360), (20, 1005888), (24, 838240), (26, 773760), (30, 670592), (31, 648960), (32, 628680), (39, 515840), (40, 502944), (48, 419120), (52, 386880), (60, 335296), (62, 324480), (64, 314340), (65, 309504), (78, 257920), (80, 251472), (93, 216320), (96, 209560), (104, 193440), (120, 167648), (124, 162240), (128, 157170), (130, 154752), (155, 129792), (156, 128960), (160, 125736), (169, 119040), (186, 108160), (192, 104780), (195, 103168), (208, 96720), (240, 83824), (248, 81120), (256, 78585), (260, 77376), (310, 64896), (312, 64480), (320, 62868), (338, 59520), (372, 54080), (384, 52390), (390, 51584), (403, 49920), (416, 48360), (465, 43264), (480, 41912), (496, 40560), (507, 39680), (520, 38688), (620, 32448), (624, 32240), (640, 31434), (676, 29760), (744, 27040), (768, 26195), (780, 25792), (806, 24960), (832, 24180), (845, 23808), (930, 21632), (960, 20956), (992, 20280), (1014, 19840), (1040, 19344), (1209, 16640), (1240, 16224), (1248, 16120), (1280, 15717), (1352, 14880), (1488, 13520), (1560, 12896), (1612, 12480), (1664, 12090), (1690, 11904), (1860, 10816), (1920, 10478), (1984, 10140), (2015, 9984), (2028, 9920), (2080, 9672), (2418, 8320), (2480, 8112), (2496, 8060), (2535, 7936), (2704, 7440), (2976, 6760), (3120, 6448), (3224, 6240), (3328, 6045), (3380, 5952), (3720, 5408), (3840, 5239), (3968, 5070), (4030, 4992), (4056, 4960), (4160, 4836)]