81409020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{263}}^1$

素因数の和:360

約数の個数: 192

約数和(自身を含む): 289529856

約数和(自身を除く): 208120836

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 20, 21, 22, 28, 30, 33, 35, 42, 44, 55, 60, 66, 67, 70, 77, 84, 105, 110, 132, 134, 140, 154, 165, 201, 210, 220, 231, 263, 268, 308, 330, 335, 385, 402, 420, 462, 469, 526, 660, 670, 737, 770, 789, 804, 924, 938, 1005, 1052, 1155, 1315, 1340, 1407, 1474, 1540, 1578, 1841, 1876, 2010, 2211, 2310, 2345, 2630, 2814, 2893, 2948, 3156, 3682, 3685, 3945, 4020, 4422, 4620, 4690, 5159, 5260, 5523, 5628, 5786, 7035, 7364, 7370, 7890, 8679, 8844, 9205, 9380, 10318, 11046, 11055, 11572, 14070, 14465, 14740, 15477, 15780, 17358, 17621, 18410, 20251, 20636, 22092, 22110, 25795, 27615, 28140, 28930, 30954, 34716, 35242, 36820, 40502, 43395, 44220, 51590, 52863, 55230, 57860, 60753, 61908, 70484, 77385, 81004, 86790, 88105, 101255, 103180, 105726, 110460, 121506, 123347, 154770, 173580, 176210, 193831, 202510, 211452, 243012, 246694, 264315, 303765, 309540, 352420, 370041, 387662, 405020, 493388, 528630, 581493, 607530, 616735, 740082, 775324, 969155, 1057260, 1162986, 1215060, 1233470, 1356817, 1480164, 1850205, 1938310, 2325972, 2466940, 2713634, 2907465, 3700410, 3876620, 4070451, 5427268, 5814930, 6784085, 7400820, 8140902, 11629860, 13568170, 16281804, 20352255, 27136340, 40704510, 81409020]

約数ペア:

[(1, 81409020), (2, 40704510), (3, 27136340), (4, 20352255), (5, 16281804), (6, 13568170), (7, 11629860), (10, 8140902), (11, 7400820), (12, 6784085), (14, 5814930), (15, 5427268), (20, 4070451), (21, 3876620), (22, 3700410), (28, 2907465), (30, 2713634), (33, 2466940), (35, 2325972), (42, 1938310), (44, 1850205), (55, 1480164), (60, 1356817), (66, 1233470), (67, 1215060), (70, 1162986), (77, 1057260), (84, 969155), (105, 775324), (110, 740082), (132, 616735), (134, 607530), (140, 581493), (154, 528630), (165, 493388), (201, 405020), (210, 387662), (220, 370041), (231, 352420), (263, 309540), (268, 303765), (308, 264315), (330, 246694), (335, 243012), (385, 211452), (402, 202510), (420, 193831), (462, 176210), (469, 173580), (526, 154770), (660, 123347), (670, 121506), (737, 110460), (770, 105726), (789, 103180), (804, 101255), (924, 88105), (938, 86790), (1005, 81004), (1052, 77385), (1155, 70484), (1315, 61908), (1340, 60753), (1407, 57860), (1474, 55230), (1540, 52863), (1578, 51590), (1841, 44220), (1876, 43395), (2010, 40502), (2211, 36820), (2310, 35242), (2345, 34716), (2630, 30954), (2814, 28930), (2893, 28140), (2948, 27615), (3156, 25795), (3682, 22110), (3685, 22092), (3945, 20636), (4020, 20251), (4422, 18410), (4620, 17621), (4690, 17358), (5159, 15780), (5260, 15477), (5523, 14740), (5628, 14465), (5786, 14070), (7035, 11572), (7364, 11055), (7370, 11046), (7890, 10318), (8679, 9380), (8844, 9205)]