256997160

素因数分解:

$2^3\times 3^2\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{857}}^1$

素因数の和:905

約数の個数: 288

約数和(自身を含む): 1029960360

約数和(自身を除く): 772963200

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 17, 18, 20, 21, 24, 28, 30, 34, 35, 36, 40, 42, 45, 49, 51, 56, 60, 63, 68, 70, 72, 84, 85, 90, 98, 102, 105, 119, 120, 126, 136, 140, 147, 153, 168, 170, 180, 196, 204, 210, 238, 245, 252, 255, 280, 294, 306, 315, 340, 357, 360, 392, 408, 420, 441, 476, 490, 504, 510, 588, 595, 612, 630, 680, 714, 735, 765, 833, 840, 857, 882, 952, 980, 1020, 1071, 1176, 1190, 1224, 1260, 1428, 1470, 1530, 1666, 1714, 1764, 1785, 1960, 2040, 2142, 2205, 2380, 2499, 2520, 2571, 2856, 2940, 3060, 3332, 3428, 3528, 3570, 4165, 4284, 4285, 4410, 4760, 4998, 5142, 5355, 5880, 5999, 6120, 6664, 6856, 7140, 7497, 7713, 8330, 8568, 8570, 8820, 9996, 10284, 10710, 11998, 12495, 12855, 14280, 14569, 14994, 15426, 16660, 17140, 17640, 17997, 19992, 20568, 21420, 23996, 24990, 25710, 29138, 29988, 29995, 30852, 33320, 34280, 35994, 37485, 38565, 41993, 42840, 43707, 47992, 49980, 51420, 53991, 58276, 59976, 59990, 61704, 71988, 72845, 74970, 77130, 83986, 87414, 89985, 99960, 101983, 102840, 107982, 116552, 119980, 125979, 131121, 143976, 145690, 149940, 154260, 167972, 174828, 179970, 203966, 209965, 215964, 218535, 239960, 251958, 262242, 269955, 291380, 299880, 305949, 308520, 335944, 349656, 359940, 377937, 407932, 419930, 431928, 437070, 503916, 509915, 524484, 539910, 582760, 611898, 629895, 655605, 713881, 719880, 755874, 815864, 839860, 874140, 917847, 1007832, 1019830, 1048968, 1079820, 1223796, 1259790, 1311210, 1427762, 1511748, 1529745, 1679720, 1748280, 1835694, 1889685, 2039660, 2141643, 2159640, 2447592, 2519580, 2622420, 2855524, 3023496, 3059490, 3569405, 3671388, 3779370, 4079320, 4283286, 4589235, 5039160, 5244840, 5711048, 6118980, 6424929, 7138810, 7342776, 7558740, 8566572, 9178470, 10708215, 12237960, 12849858, 14277620, 15117480, 17133144, 18356940, 21416430, 25699716, 28555240, 32124645, 36713880, 42832860, 51399432, 64249290, 85665720, 128498580, 256997160]

約数ペア:

[(1, 256997160), (2, 128498580), (3, 85665720), (4, 64249290), (5, 51399432), (6, 42832860), (7, 36713880), (8, 32124645), (9, 28555240), (10, 25699716), (12, 21416430), (14, 18356940), (15, 17133144), (17, 15117480), (18, 14277620), (20, 12849858), (21, 12237960), (24, 10708215), (28, 9178470), (30, 8566572), (34, 7558740), (35, 7342776), (36, 7138810), (40, 6424929), (42, 6118980), (45, 5711048), (49, 5244840), (51, 5039160), (56, 4589235), (60, 4283286), (63, 4079320), (68, 3779370), (70, 3671388), (72, 3569405), (84, 3059490), (85, 3023496), (90, 2855524), (98, 2622420), (102, 2519580), (105, 2447592), (119, 2159640), (120, 2141643), (126, 2039660), (136, 1889685), (140, 1835694), (147, 1748280), (153, 1679720), (168, 1529745), (170, 1511748), (180, 1427762), (196, 1311210), (204, 1259790), (210, 1223796), (238, 1079820), (245, 1048968), (252, 1019830), (255, 1007832), (280, 917847), (294, 874140), (306, 839860), (315, 815864), (340, 755874), (357, 719880), (360, 713881), (392, 655605), (408, 629895), (420, 611898), (441, 582760), (476, 539910), (490, 524484), (504, 509915), (510, 503916), (588, 437070), (595, 431928), (612, 419930), (630, 407932), (680, 377937), (714, 359940), (735, 349656), (765, 335944), (833, 308520), (840, 305949), (857, 299880), (882, 291380), (952, 269955), (980, 262242), (1020, 251958), (1071, 239960), (1176, 218535), (1190, 215964), (1224, 209965), (1260, 203966), (1428, 179970), (1470, 174828), (1530, 167972), (1666, 154260), (1714, 149940), (1764, 145690), (1785, 143976), (1960, 131121), (2040, 125979), (2142, 119980), (2205, 116552), (2380, 107982), (2499, 102840), (2520, 101983), (2571, 99960), (2856, 89985), (2940, 87414), (3060, 83986), (3332, 77130), (3428, 74970), (3528, 72845), (3570, 71988), (4165, 61704), (4284, 59990), (4285, 59976), (4410, 58276), (4760, 53991), (4998, 51420), (5142, 49980), (5355, 47992), (5880, 43707), (5999, 42840), (6120, 41993), (6664, 38565), (6856, 37485), (7140, 35994), (7497, 34280), (7713, 33320), (8330, 30852), (8568, 29995), (8570, 29988), (8820, 29138), (9996, 25710), (10284, 24990), (10710, 23996), (11998, 21420), (12495, 20568), (12855, 19992), (14280, 17997), (14569, 17640), (14994, 17140), (15426, 16660)]