261380280

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{163}}^1$

素因数の和:290

約数の個数: 256

約数和(自身を含む): 952197120

約数和(自身を除く): 690816840

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 23, 24, 28, 30, 35, 40, 42, 46, 56, 60, 69, 70, 83, 84, 92, 105, 115, 120, 138, 140, 161, 163, 166, 168, 184, 210, 230, 249, 276, 280, 322, 326, 332, 345, 415, 420, 460, 483, 489, 498, 552, 581, 644, 652, 664, 690, 805, 815, 830, 840, 920, 966, 978, 996, 1141, 1162, 1245, 1288, 1304, 1380, 1610, 1630, 1660, 1743, 1909, 1932, 1956, 1992, 2282, 2324, 2415, 2445, 2490, 2760, 2905, 3220, 3260, 3320, 3423, 3486, 3749, 3818, 3864, 3912, 4564, 4648, 4830, 4890, 4980, 5705, 5727, 5810, 6440, 6520, 6846, 6972, 7498, 7636, 8715, 9128, 9545, 9660, 9780, 9960, 11247, 11410, 11454, 11620, 13363, 13529, 13692, 13944, 14996, 15272, 17115, 17430, 18745, 19090, 19320, 19560, 22494, 22820, 22908, 23240, 26243, 26726, 27058, 27384, 28635, 29992, 34230, 34860, 37490, 38180, 40089, 40587, 44988, 45640, 45816, 52486, 53452, 54116, 56235, 57270, 66815, 67645, 68460, 69720, 74980, 76360, 78729, 80178, 81174, 89976, 94703, 104972, 106904, 108232, 112470, 114540, 131215, 133630, 135290, 136920, 149960, 157458, 160356, 162348, 189406, 200445, 202935, 209944, 224940, 229080, 262430, 267260, 270580, 284109, 311167, 314916, 320712, 324696, 378812, 393645, 400890, 405870, 449880, 473515, 524860, 534520, 541160, 568218, 622334, 629832, 757624, 787290, 801780, 811740, 933501, 947030, 1049720, 1136436, 1244668, 1420545, 1555835, 1574580, 1603560, 1623480, 1867002, 1894060, 2178169, 2272872, 2489336, 2841090, 3111670, 3149160, 3734004, 3788120, 4356338, 4667505, 5682180, 6223340, 6534507, 7468008, 8712676, 9335010, 10890845, 11364360, 12446680, 13069014, 17425352, 18670020, 21781690, 26138028, 32672535, 37340040, 43563380, 52276056, 65345070, 87126760, 130690140, 261380280]

約数ペア:

[(1, 261380280), (2, 130690140), (3, 87126760), (4, 65345070), (5, 52276056), (6, 43563380), (7, 37340040), (8, 32672535), (10, 26138028), (12, 21781690), (14, 18670020), (15, 17425352), (20, 13069014), (21, 12446680), (23, 11364360), (24, 10890845), (28, 9335010), (30, 8712676), (35, 7468008), (40, 6534507), (42, 6223340), (46, 5682180), (56, 4667505), (60, 4356338), (69, 3788120), (70, 3734004), (83, 3149160), (84, 3111670), (92, 2841090), (105, 2489336), (115, 2272872), (120, 2178169), (138, 1894060), (140, 1867002), (161, 1623480), (163, 1603560), (166, 1574580), (168, 1555835), (184, 1420545), (210, 1244668), (230, 1136436), (249, 1049720), (276, 947030), (280, 933501), (322, 811740), (326, 801780), (332, 787290), (345, 757624), (415, 629832), (420, 622334), (460, 568218), (483, 541160), (489, 534520), (498, 524860), (552, 473515), (581, 449880), (644, 405870), (652, 400890), (664, 393645), (690, 378812), (805, 324696), (815, 320712), (830, 314916), (840, 311167), (920, 284109), (966, 270580), (978, 267260), (996, 262430), (1141, 229080), (1162, 224940), (1245, 209944), (1288, 202935), (1304, 200445), (1380, 189406), (1610, 162348), (1630, 160356), (1660, 157458), (1743, 149960), (1909, 136920), (1932, 135290), (1956, 133630), (1992, 131215), (2282, 114540), (2324, 112470), (2415, 108232), (2445, 106904), (2490, 104972), (2760, 94703), (2905, 89976), (3220, 81174), (3260, 80178), (3320, 78729), (3423, 76360), (3486, 74980), (3749, 69720), (3818, 68460), (3864, 67645), (3912, 66815), (4564, 57270), (4648, 56235), (4830, 54116), (4890, 53452), (4980, 52486), (5705, 45816), (5727, 45640), (5810, 44988), (6440, 40587), (6520, 40089), (6846, 38180), (6972, 37490), (7498, 34860), (7636, 34230), (8715, 29992), (9128, 28635), (9545, 27384), (9660, 27058), (9780, 26726), (9960, 26243), (11247, 23240), (11410, 22908), (11454, 22820), (11620, 22494), (13363, 19560), (13529, 19320), (13692, 19090), (13944, 18745), (14996, 17430), (15272, 17115)]