261665720

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{2711}}^1$

素因数の和:2868

約数の個数: 64

約数和(自身を含む): 624844800

約数和(自身を除く): 363179080

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 127, 152, 190, 254, 380, 508, 635, 760, 1016, 1270, 2413, 2540, 2711, 4826, 5080, 5422, 9652, 10844, 12065, 13555, 19304, 21688, 24130, 27110, 48260, 51509, 54220, 96520, 103018, 108440, 206036, 257545, 344297, 412072, 515090, 688594, 1030180, 1377188, 1721485, 2060360, 2754376, 3442970, 6541643, 6885940, 13083286, 13771880, 26166572, 32708215, 52333144, 65416430, 130832860, 261665720]

約数ペア:

[(1, 261665720), (2, 130832860), (4, 65416430), (5, 52333144), (8, 32708215), (10, 26166572), (19, 13771880), (20, 13083286), (38, 6885940), (40, 6541643), (76, 3442970), (95, 2754376), (127, 2060360), (152, 1721485), (190, 1377188), (254, 1030180), (380, 688594), (508, 515090), (635, 412072), (760, 344297), (1016, 257545), (1270, 206036), (2413, 108440), (2540, 103018), (2711, 96520), (4826, 54220), (5080, 51509), (5422, 48260), (9652, 27110), (10844, 24130), (12065, 21688), (13555, 19304)]