257736258

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{2693}}^1$

素因数の和:3123

約数の個数: 48

約数和(自身を含む): 603078840

約数和(自身を除く): 345342582

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 234, 409, 818, 1227, 2454, 2693, 3681, 5317, 5386, 7362, 8079, 10634, 15951, 16158, 24237, 31902, 35009, 47853, 48474, 70018, 95706, 105027, 210054, 315081, 630162, 1101437, 2202874, 3304311, 6608622, 9912933, 14318681, 19825866, 28637362, 42956043, 85912086, 128868129, 257736258]

約数ペア:

[(1, 257736258), (2, 128868129), (3, 85912086), (6, 42956043), (9, 28637362), (13, 19825866), (18, 14318681), (26, 9912933), (39, 6608622), (78, 3304311), (117, 2202874), (234, 1101437), (409, 630162), (818, 315081), (1227, 210054), (2454, 105027), (2693, 95706), (3681, 70018), (5317, 48474), (5386, 47853), (7362, 35009), (8079, 31902), (10634, 24237), (15951, 16158)]