128955184

素因数分解:

$2^4\times {\mathrm{101}}^1\times {\mathrm{199}}^1\times {\mathrm{401}}^1$

素因数の和:709

約数の個数: 40

約数和(自身を含む): 254224800

約数和(自身を除く): 125269616

約数列:

[1, 2, 4, 8, 16, 101, 199, 202, 398, 401, 404, 796, 802, 808, 1592, 1604, 1616, 3184, 3208, 6416, 20099, 40198, 40501, 79799, 80396, 81002, 159598, 160792, 162004, 319196, 321584, 324008, 638392, 648016, 1276784, 8059699, 16119398, 32238796, 64477592, 128955184]

約数ペア:

[(1, 128955184), (2, 64477592), (4, 32238796), (8, 16119398), (16, 8059699), (101, 1276784), (199, 648016), (202, 638392), (398, 324008), (401, 321584), (404, 319196), (796, 162004), (802, 160792), (808, 159598), (1592, 81002), (1604, 80396), (1616, 79799), (3184, 40501), (3208, 40198), (6416, 20099)]