257431574

素因数分解:

$2^1\times {\mathrm{199}}^1\times {\mathrm{401}}^1\times {\mathrm{1613}}^1$

素因数の和:2215

約数の個数: 16

約数和(自身を含む): 389296800

約数和(自身を除く): 131865226

約数列:

[1, 2, 199, 398, 401, 802, 1613, 3226, 79799, 159598, 320987, 641974, 646813, 1293626, 128715787, 257431574]

約数ペア:

[(1, 257431574), (2, 128715787), (199, 1293626), (398, 646813), (401, 641974), (802, 320987), (1613, 159598), (3226, 79799)]