81649260

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1$

素因数の和:213

約数の個数: 288

約数和(自身を含む): 318269952

約数和(自身を除く): 236620692

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 28, 30, 33, 35, 36, 42, 43, 44, 45, 55, 60, 63, 66, 70, 77, 84, 86, 90, 99, 105, 110, 126, 129, 132, 137, 140, 154, 165, 172, 180, 198, 210, 215, 220, 231, 252, 258, 274, 301, 308, 315, 330, 385, 387, 396, 411, 420, 430, 462, 473, 495, 516, 548, 602, 630, 645, 660, 685, 693, 770, 774, 822, 860, 903, 924, 946, 959, 990, 1155, 1204, 1233, 1260, 1290, 1370, 1386, 1419, 1505, 1507, 1540, 1548, 1644, 1806, 1892, 1918, 1935, 1980, 2055, 2310, 2365, 2466, 2580, 2709, 2740, 2772, 2838, 2877, 3010, 3014, 3311, 3465, 3612, 3836, 3870, 4110, 4257, 4515, 4521, 4620, 4730, 4795, 4932, 5418, 5676, 5754, 5891, 6020, 6028, 6165, 6622, 6930, 7095, 7535, 7740, 8220, 8514, 8631, 9030, 9042, 9460, 9590, 9933, 10549, 10836, 11508, 11782, 12330, 13244, 13545, 13563, 13860, 14190, 14385, 15070, 16555, 17028, 17262, 17673, 18060, 18084, 19180, 19866, 21098, 21285, 22605, 23564, 24660, 27090, 27126, 28380, 28770, 29455, 29799, 30140, 31647, 33110, 34524, 35346, 39732, 41237, 42196, 42570, 43155, 45210, 49665, 52745, 53019, 54180, 54252, 57540, 58910, 59598, 63294, 64801, 66220, 67815, 70692, 82474, 85140, 86310, 88365, 90420, 94941, 99330, 105490, 106038, 117820, 119196, 123711, 126588, 129602, 135630, 148995, 158235, 164948, 172620, 176730, 189882, 194403, 198660, 206185, 210980, 212076, 247422, 259204, 265095, 271260, 297990, 316470, 324005, 353460, 371133, 379764, 388806, 412370, 453607, 474705, 494844, 530190, 583209, 595980, 618555, 632940, 648010, 742266, 777612, 824740, 907214, 949410, 972015, 1060380, 1166418, 1237110, 1296020, 1360821, 1484532, 1814428, 1855665, 1898820, 1944030, 2268035, 2332836, 2474220, 2721642, 2916045, 3711330, 3888060, 4082463, 4536070, 5443284, 5832090, 6804105, 7422660, 8164926, 9072140, 11664180, 13608210, 16329852, 20412315, 27216420, 40824630, 81649260]

約数ペア:

[(1, 81649260), (2, 40824630), (3, 27216420), (4, 20412315), (5, 16329852), (6, 13608210), (7, 11664180), (9, 9072140), (10, 8164926), (11, 7422660), (12, 6804105), (14, 5832090), (15, 5443284), (18, 4536070), (20, 4082463), (21, 3888060), (22, 3711330), (28, 2916045), (30, 2721642), (33, 2474220), (35, 2332836), (36, 2268035), (42, 1944030), (43, 1898820), (44, 1855665), (45, 1814428), (55, 1484532), (60, 1360821), (63, 1296020), (66, 1237110), (70, 1166418), (77, 1060380), (84, 972015), (86, 949410), (90, 907214), (99, 824740), (105, 777612), (110, 742266), (126, 648010), (129, 632940), (132, 618555), (137, 595980), (140, 583209), (154, 530190), (165, 494844), (172, 474705), (180, 453607), (198, 412370), (210, 388806), (215, 379764), (220, 371133), (231, 353460), (252, 324005), (258, 316470), (274, 297990), (301, 271260), (308, 265095), (315, 259204), (330, 247422), (385, 212076), (387, 210980), (396, 206185), (411, 198660), (420, 194403), (430, 189882), (462, 176730), (473, 172620), (495, 164948), (516, 158235), (548, 148995), (602, 135630), (630, 129602), (645, 126588), (660, 123711), (685, 119196), (693, 117820), (770, 106038), (774, 105490), (822, 99330), (860, 94941), (903, 90420), (924, 88365), (946, 86310), (959, 85140), (990, 82474), (1155, 70692), (1204, 67815), (1233, 66220), (1260, 64801), (1290, 63294), (1370, 59598), (1386, 58910), (1419, 57540), (1505, 54252), (1507, 54180), (1540, 53019), (1548, 52745), (1644, 49665), (1806, 45210), (1892, 43155), (1918, 42570), (1935, 42196), (1980, 41237), (2055, 39732), (2310, 35346), (2365, 34524), (2466, 33110), (2580, 31647), (2709, 30140), (2740, 29799), (2772, 29455), (2838, 28770), (2877, 28380), (3010, 27126), (3014, 27090), (3311, 24660), (3465, 23564), (3612, 22605), (3836, 21285), (3870, 21098), (4110, 19866), (4257, 19180), (4515, 18084), (4521, 18060), (4620, 17673), (4730, 17262), (4795, 17028), (4932, 16555), (5418, 15070), (5676, 14385), (5754, 14190), (5891, 13860), (6020, 13563), (6028, 13545), (6165, 13244), (6622, 12330), (6930, 11782), (7095, 11508), (7535, 10836), (7740, 10549), (8220, 9933), (8514, 9590), (8631, 9460), (9030, 9042)]