257837216

素因数分解:

$2^5\times 7^3\times {\mathrm{13}}^2\times {\mathrm{139}}^1$

素因数の和:196

約数の個数: 144

約数和(自身を含む): 645624000

約数和(自身を除く): 387786784

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 49, 52, 56, 91, 98, 104, 112, 139, 169, 182, 196, 208, 224, 278, 338, 343, 364, 392, 416, 556, 637, 676, 686, 728, 784, 973, 1112, 1183, 1274, 1352, 1372, 1456, 1568, 1807, 1946, 2224, 2366, 2548, 2704, 2744, 2912, 3614, 3892, 4448, 4459, 4732, 5096, 5408, 5488, 6811, 7228, 7784, 8281, 8918, 9464, 10192, 10976, 12649, 13622, 14456, 15568, 16562, 17836, 18928, 20384, 23491, 25298, 27244, 28912, 31136, 33124, 35672, 37856, 46982, 47677, 50596, 54488, 57824, 57967, 66248, 71344, 88543, 93964, 95354, 101192, 108976, 115934, 132496, 142688, 164437, 177086, 187928, 190708, 202384, 217952, 231868, 264992, 328874, 354172, 375856, 381416, 404768, 463736, 619801, 657748, 708344, 751712, 762832, 927472, 1151059, 1239602, 1315496, 1416688, 1525664, 1854944, 2302118, 2479204, 2630992, 2833376, 4604236, 4958408, 5261984, 8057413, 9208472, 9916816, 16114826, 18416944, 19833632, 32229652, 36833888, 64459304, 128918608, 257837216]

約数ペア:

[(1, 257837216), (2, 128918608), (4, 64459304), (7, 36833888), (8, 32229652), (13, 19833632), (14, 18416944), (16, 16114826), (26, 9916816), (28, 9208472), (32, 8057413), (49, 5261984), (52, 4958408), (56, 4604236), (91, 2833376), (98, 2630992), (104, 2479204), (112, 2302118), (139, 1854944), (169, 1525664), (182, 1416688), (196, 1315496), (208, 1239602), (224, 1151059), (278, 927472), (338, 762832), (343, 751712), (364, 708344), (392, 657748), (416, 619801), (556, 463736), (637, 404768), (676, 381416), (686, 375856), (728, 354172), (784, 328874), (973, 264992), (1112, 231868), (1183, 217952), (1274, 202384), (1352, 190708), (1372, 187928), (1456, 177086), (1568, 164437), (1807, 142688), (1946, 132496), (2224, 115934), (2366, 108976), (2548, 101192), (2704, 95354), (2744, 93964), (2912, 88543), (3614, 71344), (3892, 66248), (4448, 57967), (4459, 57824), (4732, 54488), (5096, 50596), (5408, 47677), (5488, 46982), (6811, 37856), (7228, 35672), (7784, 33124), (8281, 31136), (8918, 28912), (9464, 27244), (10192, 25298), (10976, 23491), (12649, 20384), (13622, 18928), (14456, 17836), (15568, 16562)]