155771280

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{997}}^1$

素因数の和:1054

約数の個数: 240

約数和(自身を含む): 617769984

約数和(自身を除く): 461998704

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 31, 35, 36, 40, 42, 45, 48, 56, 60, 62, 63, 70, 72, 80, 84, 90, 93, 105, 112, 120, 124, 126, 140, 144, 155, 168, 180, 186, 210, 217, 240, 248, 252, 279, 280, 310, 315, 336, 360, 372, 420, 434, 465, 496, 504, 558, 560, 620, 630, 651, 720, 744, 840, 868, 930, 997, 1008, 1085, 1116, 1240, 1260, 1302, 1395, 1488, 1680, 1736, 1860, 1953, 1994, 2170, 2232, 2480, 2520, 2604, 2790, 2991, 3255, 3472, 3720, 3906, 3988, 4340, 4464, 4985, 5040, 5208, 5580, 5982, 6510, 6979, 7440, 7812, 7976, 8680, 8973, 9765, 9970, 10416, 11160, 11964, 13020, 13958, 14955, 15624, 15952, 17360, 17946, 19530, 19940, 20937, 22320, 23928, 26040, 27916, 29910, 30907, 31248, 34895, 35892, 39060, 39880, 41874, 44865, 47856, 52080, 55832, 59820, 61814, 62811, 69790, 71784, 78120, 79760, 83748, 89730, 92721, 104685, 111664, 119640, 123628, 125622, 139580, 143568, 154535, 156240, 167496, 179460, 185442, 209370, 216349, 239280, 247256, 251244, 278163, 279160, 309070, 314055, 334992, 358920, 370884, 418740, 432698, 463605, 494512, 502488, 556326, 558320, 618140, 628110, 649047, 717840, 741768, 837480, 865396, 927210, 1004976, 1081745, 1112652, 1236280, 1256220, 1298094, 1390815, 1483536, 1674960, 1730792, 1854420, 1947141, 2163490, 2225304, 2472560, 2512440, 2596188, 2781630, 3245235, 3461584, 3708840, 3894282, 4326980, 4450608, 5024880, 5192376, 5563260, 6490470, 7417680, 7788564, 8653960, 9735705, 10384752, 11126520, 12980940, 15577128, 17307920, 19471410, 22253040, 25961880, 31154256, 38942820, 51923760, 77885640, 155771280]

約数ペア:

[(1, 155771280), (2, 77885640), (3, 51923760), (4, 38942820), (5, 31154256), (6, 25961880), (7, 22253040), (8, 19471410), (9, 17307920), (10, 15577128), (12, 12980940), (14, 11126520), (15, 10384752), (16, 9735705), (18, 8653960), (20, 7788564), (21, 7417680), (24, 6490470), (28, 5563260), (30, 5192376), (31, 5024880), (35, 4450608), (36, 4326980), (40, 3894282), (42, 3708840), (45, 3461584), (48, 3245235), (56, 2781630), (60, 2596188), (62, 2512440), (63, 2472560), (70, 2225304), (72, 2163490), (80, 1947141), (84, 1854420), (90, 1730792), (93, 1674960), (105, 1483536), (112, 1390815), (120, 1298094), (124, 1256220), (126, 1236280), (140, 1112652), (144, 1081745), (155, 1004976), (168, 927210), (180, 865396), (186, 837480), (210, 741768), (217, 717840), (240, 649047), (248, 628110), (252, 618140), (279, 558320), (280, 556326), (310, 502488), (315, 494512), (336, 463605), (360, 432698), (372, 418740), (420, 370884), (434, 358920), (465, 334992), (496, 314055), (504, 309070), (558, 279160), (560, 278163), (620, 251244), (630, 247256), (651, 239280), (720, 216349), (744, 209370), (840, 185442), (868, 179460), (930, 167496), (997, 156240), (1008, 154535), (1085, 143568), (1116, 139580), (1240, 125622), (1260, 123628), (1302, 119640), (1395, 111664), (1488, 104685), (1680, 92721), (1736, 89730), (1860, 83748), (1953, 79760), (1994, 78120), (2170, 71784), (2232, 69790), (2480, 62811), (2520, 61814), (2604, 59820), (2790, 55832), (2991, 52080), (3255, 47856), (3472, 44865), (3720, 41874), (3906, 39880), (3988, 39060), (4340, 35892), (4464, 34895), (4985, 31248), (5040, 30907), (5208, 29910), (5580, 27916), (5982, 26040), (6510, 23928), (6979, 22320), (7440, 20937), (7812, 19940), (7976, 19530), (8680, 17946), (8973, 17360), (9765, 15952), (9970, 15624), (10416, 14955), (11160, 13958), (11964, 13020)]