261851616

素因数分解:

$2^5\times 3^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{409}}^1$

素因数の和:463

約数の個数: 240

約数和(自身を含む): 875120400

約数和(自身を除く): 613268784

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 19, 24, 26, 27, 32, 36, 38, 39, 48, 52, 54, 57, 72, 76, 78, 81, 96, 104, 108, 114, 117, 144, 152, 156, 162, 171, 208, 216, 228, 234, 247, 288, 304, 312, 324, 342, 351, 409, 416, 432, 456, 468, 494, 513, 608, 624, 648, 684, 702, 741, 818, 864, 912, 936, 988, 1026, 1053, 1227, 1248, 1296, 1368, 1404, 1482, 1539, 1636, 1824, 1872, 1976, 2052, 2106, 2223, 2454, 2592, 2736, 2808, 2964, 3078, 3272, 3681, 3744, 3952, 4104, 4212, 4446, 4908, 5317, 5472, 5616, 5928, 6156, 6544, 6669, 7362, 7771, 7904, 8208, 8424, 8892, 9816, 10634, 11043, 11232, 11856, 12312, 13088, 13338, 14724, 15542, 15951, 16416, 16848, 17784, 19632, 20007, 21268, 22086, 23313, 23712, 24624, 26676, 29448, 31084, 31902, 33129, 33696, 35568, 39264, 40014, 42536, 44172, 46626, 47853, 49248, 53352, 58896, 62168, 63804, 66258, 69939, 71136, 80028, 85072, 88344, 93252, 95706, 101023, 106704, 117792, 124336, 127608, 132516, 139878, 143559, 160056, 170144, 176688, 186504, 191412, 202046, 209817, 213408, 248672, 255216, 265032, 279756, 287118, 303069, 320112, 353376, 373008, 382824, 404092, 419634, 430677, 510432, 530064, 559512, 574236, 606138, 629451, 640224, 746016, 765648, 808184, 839268, 861354, 909207, 1060128, 1119024, 1148472, 1212276, 1258902, 1531296, 1616368, 1678536, 1722708, 1818414, 2238048, 2296944, 2424552, 2517804, 2727621, 3232736, 3357072, 3445416, 3636828, 4593888, 4849104, 5035608, 5455242, 6714144, 6890832, 7273656, 8182863, 9698208, 10071216, 10910484, 13781664, 14547312, 16365726, 20142432, 21820968, 29094624, 32731452, 43641936, 65462904, 87283872, 130925808, 261851616]

約数ペア:

[(1, 261851616), (2, 130925808), (3, 87283872), (4, 65462904), (6, 43641936), (8, 32731452), (9, 29094624), (12, 21820968), (13, 20142432), (16, 16365726), (18, 14547312), (19, 13781664), (24, 10910484), (26, 10071216), (27, 9698208), (32, 8182863), (36, 7273656), (38, 6890832), (39, 6714144), (48, 5455242), (52, 5035608), (54, 4849104), (57, 4593888), (72, 3636828), (76, 3445416), (78, 3357072), (81, 3232736), (96, 2727621), (104, 2517804), (108, 2424552), (114, 2296944), (117, 2238048), (144, 1818414), (152, 1722708), (156, 1678536), (162, 1616368), (171, 1531296), (208, 1258902), (216, 1212276), (228, 1148472), (234, 1119024), (247, 1060128), (288, 909207), (304, 861354), (312, 839268), (324, 808184), (342, 765648), (351, 746016), (409, 640224), (416, 629451), (432, 606138), (456, 574236), (468, 559512), (494, 530064), (513, 510432), (608, 430677), (624, 419634), (648, 404092), (684, 382824), (702, 373008), (741, 353376), (818, 320112), (864, 303069), (912, 287118), (936, 279756), (988, 265032), (1026, 255216), (1053, 248672), (1227, 213408), (1248, 209817), (1296, 202046), (1368, 191412), (1404, 186504), (1482, 176688), (1539, 170144), (1636, 160056), (1824, 143559), (1872, 139878), (1976, 132516), (2052, 127608), (2106, 124336), (2223, 117792), (2454, 106704), (2592, 101023), (2736, 95706), (2808, 93252), (2964, 88344), (3078, 85072), (3272, 80028), (3681, 71136), (3744, 69939), (3952, 66258), (4104, 63804), (4212, 62168), (4446, 58896), (4908, 53352), (5317, 49248), (5472, 47853), (5616, 46626), (5928, 44172), (6156, 42536), (6544, 40014), (6669, 39264), (7362, 35568), (7771, 33696), (7904, 33129), (8208, 31902), (8424, 31084), (8892, 29448), (9816, 26676), (10634, 24624), (11043, 23712), (11232, 23313), (11856, 22086), (12312, 21268), (13088, 20007), (13338, 19632), (14724, 17784), (15542, 16848), (15951, 16416)]