81407968

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{263}}^1\times {\mathrm{569}}^1$

素因数の和:859

約数の個数: 48

約数和(自身を含む): 170644320

約数和(自身を除く): 89236352

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 68, 136, 263, 272, 526, 544, 569, 1052, 1138, 2104, 2276, 4208, 4471, 4552, 8416, 8942, 9104, 9673, 17884, 18208, 19346, 35768, 38692, 71536, 77384, 143072, 149647, 154768, 299294, 309536, 598588, 1197176, 2394352, 2543999, 4788704, 5087998, 10175996, 20351992, 40703984, 81407968]

約数ペア:

[(1, 81407968), (2, 40703984), (4, 20351992), (8, 10175996), (16, 5087998), (17, 4788704), (32, 2543999), (34, 2394352), (68, 1197176), (136, 598588), (263, 309536), (272, 299294), (526, 154768), (544, 149647), (569, 143072), (1052, 77384), (1138, 71536), (2104, 38692), (2276, 35768), (4208, 19346), (4471, 18208), (4552, 17884), (8416, 9673), (8942, 9104)]