81211620

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{1201}}^1$

素因数の和:1250

約数の個数: 144

約数和(自身を含む): 276248448

約数和(自身を除く): 195036828

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 23, 28, 30, 35, 42, 46, 49, 60, 69, 70, 84, 92, 98, 105, 115, 138, 140, 147, 161, 196, 210, 230, 245, 276, 294, 322, 345, 420, 460, 483, 490, 588, 644, 690, 735, 805, 966, 980, 1127, 1201, 1380, 1470, 1610, 1932, 2254, 2402, 2415, 2940, 3220, 3381, 3603, 4508, 4804, 4830, 5635, 6005, 6762, 7206, 8407, 9660, 11270, 12010, 13524, 14412, 16814, 16905, 18015, 22540, 24020, 25221, 27623, 33628, 33810, 36030, 42035, 50442, 55246, 58849, 67620, 72060, 82869, 84070, 100884, 110492, 117698, 126105, 138115, 165738, 168140, 176547, 193361, 235396, 252210, 276230, 294245, 331476, 353094, 386722, 414345, 504420, 552460, 580083, 588490, 706188, 773444, 828690, 882735, 966805, 1160166, 1176980, 1353527, 1657380, 1765470, 1933610, 2320332, 2707054, 2900415, 3530940, 3867220, 4060581, 5414108, 5800830, 6767635, 8121162, 11601660, 13535270, 16242324, 20302905, 27070540, 40605810, 81211620]

約数ペア:

[(1, 81211620), (2, 40605810), (3, 27070540), (4, 20302905), (5, 16242324), (6, 13535270), (7, 11601660), (10, 8121162), (12, 6767635), (14, 5800830), (15, 5414108), (20, 4060581), (21, 3867220), (23, 3530940), (28, 2900415), (30, 2707054), (35, 2320332), (42, 1933610), (46, 1765470), (49, 1657380), (60, 1353527), (69, 1176980), (70, 1160166), (84, 966805), (92, 882735), (98, 828690), (105, 773444), (115, 706188), (138, 588490), (140, 580083), (147, 552460), (161, 504420), (196, 414345), (210, 386722), (230, 353094), (245, 331476), (276, 294245), (294, 276230), (322, 252210), (345, 235396), (420, 193361), (460, 176547), (483, 168140), (490, 165738), (588, 138115), (644, 126105), (690, 117698), (735, 110492), (805, 100884), (966, 84070), (980, 82869), (1127, 72060), (1201, 67620), (1380, 58849), (1470, 55246), (1610, 50442), (1932, 42035), (2254, 36030), (2402, 33810), (2415, 33628), (2940, 27623), (3220, 25221), (3381, 24020), (3603, 22540), (4508, 18015), (4804, 16905), (4830, 16814), (5635, 14412), (6005, 13524), (6762, 12010), (7206, 11270), (8407, 9660)]