257041616

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{991}}^1$

素因数の和:1084

約数の個数: 80

約数和(自身を含む): 568296960

約数和(自身を除く): 311255344

約数列:

[1, 2, 4, 8, 13, 16, 26, 29, 43, 52, 58, 86, 104, 116, 172, 208, 232, 344, 377, 464, 559, 688, 754, 991, 1118, 1247, 1508, 1982, 2236, 2494, 3016, 3964, 4472, 4988, 6032, 7928, 8944, 9976, 12883, 15856, 16211, 19952, 25766, 28739, 32422, 42613, 51532, 57478, 64844, 85226, 103064, 114956, 129688, 170452, 206128, 229912, 259376, 340904, 373607, 459824, 553969, 681808, 747214, 1107938, 1235777, 1494428, 2215876, 2471554, 2988856, 4431752, 4943108, 5977712, 8863504, 9886216, 16065101, 19772432, 32130202, 64260404, 128520808, 257041616]

約数ペア:

[(1, 257041616), (2, 128520808), (4, 64260404), (8, 32130202), (13, 19772432), (16, 16065101), (26, 9886216), (29, 8863504), (43, 5977712), (52, 4943108), (58, 4431752), (86, 2988856), (104, 2471554), (116, 2215876), (172, 1494428), (208, 1235777), (232, 1107938), (344, 747214), (377, 681808), (464, 553969), (559, 459824), (688, 373607), (754, 340904), (991, 259376), (1118, 229912), (1247, 206128), (1508, 170452), (1982, 129688), (2236, 114956), (2494, 103064), (3016, 85226), (3964, 64844), (4472, 57478), (4988, 51532), (6032, 42613), (7928, 32422), (8944, 28739), (9976, 25766), (12883, 19952), (15856, 16211)]