78665580

素因数分解:

$2^2\times 3^4\times 5^1\times 7^2\times {\mathrm{991}}^1$

素因数の和:1026

約数の個数: 180

約数和(自身を含む): 287356608

約数和(自身を除く): 208691028

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 49, 54, 60, 63, 70, 81, 84, 90, 98, 105, 108, 126, 135, 140, 147, 162, 180, 189, 196, 210, 245, 252, 270, 294, 315, 324, 378, 405, 420, 441, 490, 540, 567, 588, 630, 735, 756, 810, 882, 945, 980, 991, 1134, 1260, 1323, 1470, 1620, 1764, 1890, 1982, 2205, 2268, 2646, 2835, 2940, 2973, 3780, 3964, 3969, 4410, 4955, 5292, 5670, 5946, 6615, 6937, 7938, 8820, 8919, 9910, 11340, 11892, 13230, 13874, 14865, 15876, 17838, 19820, 19845, 20811, 26460, 26757, 27748, 29730, 34685, 35676, 39690, 41622, 44595, 48559, 53514, 59460, 62433, 69370, 79380, 80271, 83244, 89190, 97118, 104055, 107028, 124866, 133785, 138740, 145677, 160542, 178380, 187299, 194236, 208110, 242795, 249732, 267570, 291354, 312165, 321084, 374598, 401355, 416220, 437031, 485590, 535140, 561897, 582708, 624330, 728385, 749196, 802710, 874062, 936495, 971180, 1123794, 1248660, 1311093, 1456770, 1605420, 1748124, 1872990, 2185155, 2247588, 2622186, 2809485, 2913540, 3745980, 3933279, 4370310, 5244372, 5618970, 6555465, 7866558, 8740620, 11237940, 13110930, 15733116, 19666395, 26221860, 39332790, 78665580]

約数ペア:

[(1, 78665580), (2, 39332790), (3, 26221860), (4, 19666395), (5, 15733116), (6, 13110930), (7, 11237940), (9, 8740620), (10, 7866558), (12, 6555465), (14, 5618970), (15, 5244372), (18, 4370310), (20, 3933279), (21, 3745980), (27, 2913540), (28, 2809485), (30, 2622186), (35, 2247588), (36, 2185155), (42, 1872990), (45, 1748124), (49, 1605420), (54, 1456770), (60, 1311093), (63, 1248660), (70, 1123794), (81, 971180), (84, 936495), (90, 874062), (98, 802710), (105, 749196), (108, 728385), (126, 624330), (135, 582708), (140, 561897), (147, 535140), (162, 485590), (180, 437031), (189, 416220), (196, 401355), (210, 374598), (245, 321084), (252, 312165), (270, 291354), (294, 267570), (315, 249732), (324, 242795), (378, 208110), (405, 194236), (420, 187299), (441, 178380), (490, 160542), (540, 145677), (567, 138740), (588, 133785), (630, 124866), (735, 107028), (756, 104055), (810, 97118), (882, 89190), (945, 83244), (980, 80271), (991, 79380), (1134, 69370), (1260, 62433), (1323, 59460), (1470, 53514), (1620, 48559), (1764, 44595), (1890, 41622), (1982, 39690), (2205, 35676), (2268, 34685), (2646, 29730), (2835, 27748), (2940, 26757), (2973, 26460), (3780, 20811), (3964, 19845), (3969, 19820), (4410, 17838), (4955, 15876), (5292, 14865), (5670, 13874), (5946, 13230), (6615, 11892), (6937, 11340), (7938, 9910), (8820, 8919)]