68257980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:209

約数の個数: 216

約数和(自身を含む): 246486240

約数和(自身を除く): 178228260

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 71, 84, 90, 98, 105, 109, 126, 140, 142, 147, 180, 196, 210, 213, 218, 245, 252, 284, 294, 315, 327, 355, 420, 426, 436, 441, 490, 497, 545, 588, 630, 639, 654, 710, 735, 763, 852, 882, 980, 981, 994, 1065, 1090, 1260, 1278, 1308, 1420, 1470, 1491, 1526, 1635, 1764, 1962, 1988, 2130, 2180, 2205, 2289, 2485, 2556, 2940, 2982, 3052, 3195, 3270, 3479, 3815, 3924, 4260, 4410, 4473, 4578, 4905, 4970, 5341, 5964, 6390, 6540, 6867, 6958, 7455, 7630, 7739, 8820, 8946, 9156, 9810, 9940, 10437, 10682, 11445, 12780, 13734, 13916, 14910, 15260, 15478, 16023, 17395, 17892, 19620, 20874, 21364, 22365, 22890, 23217, 26705, 27468, 29820, 30956, 31311, 32046, 34335, 34790, 38695, 41748, 44730, 45780, 46434, 48069, 52185, 53410, 54173, 62622, 64092, 68670, 69580, 69651, 77390, 80115, 89460, 92868, 96138, 104370, 106820, 108346, 116085, 125244, 137340, 139302, 154780, 156555, 160230, 162519, 192276, 208740, 216692, 232170, 240345, 270865, 278604, 313110, 320460, 325038, 348255, 379211, 464340, 480690, 487557, 541730, 626220, 650076, 696510, 758422, 812595, 961380, 975114, 1083460, 1137633, 1393020, 1516844, 1625190, 1896055, 1950228, 2275266, 2437785, 3250380, 3412899, 3792110, 4550532, 4875570, 5688165, 6825798, 7584220, 9751140, 11376330, 13651596, 17064495, 22752660, 34128990, 68257980]

約数ペア:

[(1, 68257980), (2, 34128990), (3, 22752660), (4, 17064495), (5, 13651596), (6, 11376330), (7, 9751140), (9, 7584220), (10, 6825798), (12, 5688165), (14, 4875570), (15, 4550532), (18, 3792110), (20, 3412899), (21, 3250380), (28, 2437785), (30, 2275266), (35, 1950228), (36, 1896055), (42, 1625190), (45, 1516844), (49, 1393020), (60, 1137633), (63, 1083460), (70, 975114), (71, 961380), (84, 812595), (90, 758422), (98, 696510), (105, 650076), (109, 626220), (126, 541730), (140, 487557), (142, 480690), (147, 464340), (180, 379211), (196, 348255), (210, 325038), (213, 320460), (218, 313110), (245, 278604), (252, 270865), (284, 240345), (294, 232170), (315, 216692), (327, 208740), (355, 192276), (420, 162519), (426, 160230), (436, 156555), (441, 154780), (490, 139302), (497, 137340), (545, 125244), (588, 116085), (630, 108346), (639, 106820), (654, 104370), (710, 96138), (735, 92868), (763, 89460), (852, 80115), (882, 77390), (980, 69651), (981, 69580), (994, 68670), (1065, 64092), (1090, 62622), (1260, 54173), (1278, 53410), (1308, 52185), (1420, 48069), (1470, 46434), (1491, 45780), (1526, 44730), (1635, 41748), (1764, 38695), (1962, 34790), (1988, 34335), (2130, 32046), (2180, 31311), (2205, 30956), (2289, 29820), (2485, 27468), (2556, 26705), (2940, 23217), (2982, 22890), (3052, 22365), (3195, 21364), (3270, 20874), (3479, 19620), (3815, 17892), (3924, 17395), (4260, 16023), (4410, 15478), (4473, 15260), (4578, 14910), (4905, 13916), (4970, 13734), (5341, 12780), (5964, 11445), (6390, 10682), (6540, 10437), (6867, 9940), (6958, 9810), (7455, 9156), (7630, 8946), (7739, 8820)]