261468880

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{179}}^1$

素因数の和:273

約数の個数: 120

約数和(自身を含む): 664912800

約数和(自身を除く): 403443920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 38, 40, 62, 76, 80, 95, 124, 152, 155, 179, 190, 248, 304, 310, 358, 380, 496, 589, 620, 716, 760, 895, 961, 1178, 1240, 1432, 1520, 1790, 1922, 2356, 2480, 2864, 2945, 3401, 3580, 3844, 4712, 4805, 5549, 5890, 6802, 7160, 7688, 9424, 9610, 11098, 11780, 13604, 14320, 15376, 17005, 18259, 19220, 22196, 23560, 27208, 27745, 34010, 36518, 38440, 44392, 47120, 54416, 55490, 68020, 73036, 76880, 88784, 91295, 105431, 110980, 136040, 146072, 172019, 182590, 210862, 221960, 272080, 292144, 344038, 365180, 421724, 443920, 527155, 688076, 730360, 843448, 860095, 1054310, 1376152, 1460720, 1686896, 1720190, 2108620, 2752304, 3268361, 3440380, 4217240, 6536722, 6880760, 8434480, 13073444, 13761520, 16341805, 26146888, 32683610, 52293776, 65367220, 130734440, 261468880]

約数ペア:

[(1, 261468880), (2, 130734440), (4, 65367220), (5, 52293776), (8, 32683610), (10, 26146888), (16, 16341805), (19, 13761520), (20, 13073444), (31, 8434480), (38, 6880760), (40, 6536722), (62, 4217240), (76, 3440380), (80, 3268361), (95, 2752304), (124, 2108620), (152, 1720190), (155, 1686896), (179, 1460720), (190, 1376152), (248, 1054310), (304, 860095), (310, 843448), (358, 730360), (380, 688076), (496, 527155), (589, 443920), (620, 421724), (716, 365180), (760, 344038), (895, 292144), (961, 272080), (1178, 221960), (1240, 210862), (1432, 182590), (1520, 172019), (1790, 146072), (1922, 136040), (2356, 110980), (2480, 105431), (2864, 91295), (2945, 88784), (3401, 76880), (3580, 73036), (3844, 68020), (4712, 55490), (4805, 54416), (5549, 47120), (5890, 44392), (6802, 38440), (7160, 36518), (7688, 34010), (9424, 27745), (9610, 27208), (11098, 23560), (11780, 22196), (13604, 19220), (14320, 18259), (15376, 17005)]