261963520

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{173}}^1$

素因数の和:227

約数の個数: 216

約数和(自身を含む): 781020576

約数和(自身を除く): 519057056

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 52, 56, 64, 65, 70, 80, 91, 104, 112, 128, 130, 140, 160, 169, 173, 182, 208, 224, 256, 260, 280, 320, 338, 346, 364, 416, 448, 455, 520, 560, 640, 676, 692, 728, 832, 845, 865, 896, 910, 1040, 1120, 1183, 1211, 1280, 1352, 1384, 1456, 1664, 1690, 1730, 1792, 1820, 2080, 2240, 2249, 2366, 2422, 2704, 2768, 2912, 3328, 3380, 3460, 3640, 4160, 4480, 4498, 4732, 4844, 5408, 5536, 5824, 5915, 6055, 6760, 6920, 7280, 8320, 8960, 8996, 9464, 9688, 10816, 11072, 11245, 11648, 11830, 12110, 13520, 13840, 14560, 15743, 16640, 17992, 18928, 19376, 21632, 22144, 22490, 23296, 23660, 24220, 27040, 27680, 29120, 29237, 31486, 35984, 37856, 38752, 43264, 44288, 44980, 47320, 48440, 54080, 55360, 58240, 58474, 62972, 71968, 75712, 77504, 78715, 89960, 94640, 96880, 108160, 110720, 116480, 116948, 125944, 143936, 146185, 151424, 155008, 157430, 179920, 189280, 193760, 204659, 216320, 221440, 233896, 251888, 287872, 292370, 302848, 310016, 314860, 359840, 378560, 387520, 409318, 467792, 503776, 575744, 584740, 629720, 719680, 757120, 775040, 818636, 935584, 1007552, 1023295, 1169480, 1259440, 1439360, 1514240, 1550080, 1637272, 1871168, 2015104, 2046590, 2338960, 2518880, 2878720, 3274544, 3742336, 4030208, 4093180, 4677920, 5037760, 6549088, 7484672, 8186360, 9355840, 10075520, 13098176, 16372720, 18711680, 20151040, 26196352, 32745440, 37423360, 52392704, 65490880, 130981760, 261963520]

約数ペア:

[(1, 261963520), (2, 130981760), (4, 65490880), (5, 52392704), (7, 37423360), (8, 32745440), (10, 26196352), (13, 20151040), (14, 18711680), (16, 16372720), (20, 13098176), (26, 10075520), (28, 9355840), (32, 8186360), (35, 7484672), (40, 6549088), (52, 5037760), (56, 4677920), (64, 4093180), (65, 4030208), (70, 3742336), (80, 3274544), (91, 2878720), (104, 2518880), (112, 2338960), (128, 2046590), (130, 2015104), (140, 1871168), (160, 1637272), (169, 1550080), (173, 1514240), (182, 1439360), (208, 1259440), (224, 1169480), (256, 1023295), (260, 1007552), (280, 935584), (320, 818636), (338, 775040), (346, 757120), (364, 719680), (416, 629720), (448, 584740), (455, 575744), (520, 503776), (560, 467792), (640, 409318), (676, 387520), (692, 378560), (728, 359840), (832, 314860), (845, 310016), (865, 302848), (896, 292370), (910, 287872), (1040, 251888), (1120, 233896), (1183, 221440), (1211, 216320), (1280, 204659), (1352, 193760), (1384, 189280), (1456, 179920), (1664, 157430), (1690, 155008), (1730, 151424), (1792, 146185), (1820, 143936), (2080, 125944), (2240, 116948), (2249, 116480), (2366, 110720), (2422, 108160), (2704, 96880), (2768, 94640), (2912, 89960), (3328, 78715), (3380, 77504), (3460, 75712), (3640, 71968), (4160, 62972), (4480, 58474), (4498, 58240), (4732, 55360), (4844, 54080), (5408, 48440), (5536, 47320), (5824, 44980), (5915, 44288), (6055, 43264), (6760, 38752), (6920, 37856), (7280, 35984), (8320, 31486), (8960, 29237), (8996, 29120), (9464, 27680), (9688, 27040), (10816, 24220), (11072, 23660), (11245, 23296), (11648, 22490), (11830, 22144), (12110, 21632), (13520, 19376), (13840, 18928), (14560, 17992), (15743, 16640)]