257255280

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{431}}^1\times {\mathrm{829}}^1$

素因数の和:1279

約数の個数: 120

約数和(自身を含む): 866998080

約数和(自身を除く): 609742800

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 431, 720, 829, 862, 1293, 1658, 1724, 2155, 2487, 2586, 3316, 3448, 3879, 4145, 4310, 4974, 5172, 6465, 6632, 6896, 7461, 7758, 8290, 8620, 9948, 10344, 12435, 12930, 13264, 14922, 15516, 16580, 17240, 19395, 19896, 20688, 24870, 25860, 29844, 31032, 33160, 34480, 37305, 38790, 39792, 49740, 51720, 59688, 62064, 66320, 74610, 77580, 99480, 103440, 119376, 149220, 155160, 198960, 298440, 310320, 357299, 596880, 714598, 1071897, 1429196, 1786495, 2143794, 2858392, 3215691, 3572990, 4287588, 5359485, 5716784, 6431382, 7145980, 8575176, 10718970, 12862764, 14291960, 16078455, 17150352, 21437940, 25725528, 28583920, 32156910, 42875880, 51451056, 64313820, 85751760, 128627640, 257255280]

約数ペア:

[(1, 257255280), (2, 128627640), (3, 85751760), (4, 64313820), (5, 51451056), (6, 42875880), (8, 32156910), (9, 28583920), (10, 25725528), (12, 21437940), (15, 17150352), (16, 16078455), (18, 14291960), (20, 12862764), (24, 10718970), (30, 8575176), (36, 7145980), (40, 6431382), (45, 5716784), (48, 5359485), (60, 4287588), (72, 3572990), (80, 3215691), (90, 2858392), (120, 2143794), (144, 1786495), (180, 1429196), (240, 1071897), (360, 714598), (431, 596880), (720, 357299), (829, 310320), (862, 298440), (1293, 198960), (1658, 155160), (1724, 149220), (2155, 119376), (2487, 103440), (2586, 99480), (3316, 77580), (3448, 74610), (3879, 66320), (4145, 62064), (4310, 59688), (4974, 51720), (5172, 49740), (6465, 39792), (6632, 38790), (6896, 37305), (7461, 34480), (7758, 33160), (8290, 31032), (8620, 29844), (9948, 25860), (10344, 24870), (12435, 20688), (12930, 19896), (13264, 19395), (14922, 17240), (15516, 16580)]