257278460

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{13007}}^1$

素因数の和:13082

約数の個数: 48

約数和(自身を含む): 576930816

約数和(自身を除く): 319652356

約数列:

[1, 2, 4, 5, 10, 20, 23, 43, 46, 86, 92, 115, 172, 215, 230, 430, 460, 860, 989, 1978, 3956, 4945, 9890, 13007, 19780, 26014, 52028, 65035, 130070, 260140, 299161, 559301, 598322, 1118602, 1196644, 1495805, 2237204, 2796505, 2991610, 5593010, 5983220, 11186020, 12863923, 25727846, 51455692, 64319615, 128639230, 257278460]

約数ペア:

[(1, 257278460), (2, 128639230), (4, 64319615), (5, 51455692), (10, 25727846), (20, 12863923), (23, 11186020), (43, 5983220), (46, 5593010), (86, 2991610), (92, 2796505), (115, 2237204), (172, 1495805), (215, 1196644), (230, 1118602), (430, 598322), (460, 559301), (860, 299161), (989, 260140), (1978, 130070), (3956, 65035), (4945, 52028), (9890, 26014), (13007, 19780)]