257227840

素因数分解:

$2^6\times 5^1\times {\mathrm{139}}^1\times {\mathrm{5783}}^1$

素因数の和:5939

約数の個数: 56

約数和(自身を含む): 617037120

約数和(自身を除く): 359809280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 139, 160, 278, 320, 556, 695, 1112, 1390, 2224, 2780, 4448, 5560, 5783, 8896, 11120, 11566, 22240, 23132, 28915, 44480, 46264, 57830, 92528, 115660, 185056, 231320, 370112, 462640, 803837, 925280, 1607674, 1850560, 3215348, 4019185, 6430696, 8038370, 12861392, 16076740, 25722784, 32153480, 51445568, 64306960, 128613920, 257227840]

約数ペア:

[(1, 257227840), (2, 128613920), (4, 64306960), (5, 51445568), (8, 32153480), (10, 25722784), (16, 16076740), (20, 12861392), (32, 8038370), (40, 6430696), (64, 4019185), (80, 3215348), (139, 1850560), (160, 1607674), (278, 925280), (320, 803837), (556, 462640), (695, 370112), (1112, 231320), (1390, 185056), (2224, 115660), (2780, 92528), (4448, 57830), (5560, 46264), (5783, 44480), (8896, 28915), (11120, 23132), (11566, 22240)]