278664280

素因数分解:

$2^3\times 5^1\times {\mathrm{263}}^1\times {\mathrm{26489}}^1$

素因数の和:26763

約数の個数: 32

約数和(自身を含む): 629402400

約数和(自身を除く): 350738120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 263, 526, 1052, 1315, 2104, 2630, 5260, 10520, 26489, 52978, 105956, 132445, 211912, 264890, 529780, 1059560, 6966607, 13933214, 27866428, 34833035, 55732856, 69666070, 139332140, 278664280]

約数ペア:

[(1, 278664280), (2, 139332140), (4, 69666070), (5, 55732856), (8, 34833035), (10, 27866428), (20, 13933214), (40, 6966607), (263, 1059560), (526, 529780), (1052, 264890), (1315, 211912), (2104, 132445), (2630, 105956), (5260, 52978), (10520, 26489)]