261359280

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{3989}}^1$

素因数の和:4028

約数の個数: 240

約数和(自身を含む): 1080555840

約数和(自身を除く): 819196560

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 16, 18, 20, 21, 24, 26, 28, 30, 35, 36, 39, 40, 42, 45, 48, 52, 56, 60, 63, 65, 70, 72, 78, 80, 84, 90, 91, 104, 105, 112, 117, 120, 126, 130, 140, 144, 156, 168, 180, 182, 195, 208, 210, 234, 240, 252, 260, 273, 280, 312, 315, 336, 360, 364, 390, 420, 455, 468, 504, 520, 546, 560, 585, 624, 630, 720, 728, 780, 819, 840, 910, 936, 1008, 1040, 1092, 1170, 1260, 1365, 1456, 1560, 1638, 1680, 1820, 1872, 2184, 2340, 2520, 2730, 3120, 3276, 3640, 3989, 4095, 4368, 4680, 5040, 5460, 6552, 7280, 7978, 8190, 9360, 10920, 11967, 13104, 15956, 16380, 19945, 21840, 23934, 27923, 31912, 32760, 35901, 39890, 47868, 51857, 55846, 59835, 63824, 65520, 71802, 79780, 83769, 95736, 103714, 111692, 119670, 139615, 143604, 155571, 159560, 167538, 179505, 191472, 207428, 223384, 239340, 251307, 259285, 279230, 287208, 311142, 319120, 335076, 359010, 362999, 414856, 418845, 446768, 466713, 478680, 502614, 518570, 558460, 574416, 622284, 670152, 718020, 725998, 777855, 829712, 837690, 933426, 957360, 1005228, 1037140, 1088997, 1116920, 1244568, 1256535, 1340304, 1436040, 1451996, 1555710, 1675380, 1814995, 1866852, 2010456, 2074280, 2177994, 2233840, 2333565, 2489136, 2513070, 2872080, 2903992, 3111420, 3266991, 3350760, 3629990, 3733704, 4020912, 4148560, 4355988, 4667130, 5026140, 5444985, 5807984, 6222840, 6533982, 6701520, 7259980, 7467408, 8711976, 9334260, 10052280, 10889970, 12445680, 13067964, 14519960, 16334955, 17423952, 18668520, 20104560, 21779940, 26135928, 29039920, 32669910, 37337040, 43559880, 52271856, 65339820, 87119760, 130679640, 261359280]

約数ペア:

[(1, 261359280), (2, 130679640), (3, 87119760), (4, 65339820), (5, 52271856), (6, 43559880), (7, 37337040), (8, 32669910), (9, 29039920), (10, 26135928), (12, 21779940), (13, 20104560), (14, 18668520), (15, 17423952), (16, 16334955), (18, 14519960), (20, 13067964), (21, 12445680), (24, 10889970), (26, 10052280), (28, 9334260), (30, 8711976), (35, 7467408), (36, 7259980), (39, 6701520), (40, 6533982), (42, 6222840), (45, 5807984), (48, 5444985), (52, 5026140), (56, 4667130), (60, 4355988), (63, 4148560), (65, 4020912), (70, 3733704), (72, 3629990), (78, 3350760), (80, 3266991), (84, 3111420), (90, 2903992), (91, 2872080), (104, 2513070), (105, 2489136), (112, 2333565), (117, 2233840), (120, 2177994), (126, 2074280), (130, 2010456), (140, 1866852), (144, 1814995), (156, 1675380), (168, 1555710), (180, 1451996), (182, 1436040), (195, 1340304), (208, 1256535), (210, 1244568), (234, 1116920), (240, 1088997), (252, 1037140), (260, 1005228), (273, 957360), (280, 933426), (312, 837690), (315, 829712), (336, 777855), (360, 725998), (364, 718020), (390, 670152), (420, 622284), (455, 574416), (468, 558460), (504, 518570), (520, 502614), (546, 478680), (560, 466713), (585, 446768), (624, 418845), (630, 414856), (720, 362999), (728, 359010), (780, 335076), (819, 319120), (840, 311142), (910, 287208), (936, 279230), (1008, 259285), (1040, 251307), (1092, 239340), (1170, 223384), (1260, 207428), (1365, 191472), (1456, 179505), (1560, 167538), (1638, 159560), (1680, 155571), (1820, 143604), (1872, 139615), (2184, 119670), (2340, 111692), (2520, 103714), (2730, 95736), (3120, 83769), (3276, 79780), (3640, 71802), (3989, 65520), (4095, 63824), (4368, 59835), (4680, 55846), (5040, 51857), (5460, 47868), (6552, 39890), (7280, 35901), (7978, 32760), (8190, 31912), (9360, 27923), (10920, 23934), (11967, 21840), (13104, 19945), (15956, 16380)]