18981081567

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1\times {\mathrm{683}}^1$

素因数の和:898

約数の個数: 128

約数和(自身を含む): 34670592000

約数和(自身を除く): 15689510433

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 71, 109, 133, 171, 189, 213, 327, 399, 497, 513, 639, 683, 763, 981, 1197, 1349, 1491, 1917, 2049, 2071, 2289, 2943, 3591, 4047, 4473, 4781, 6147, 6213, 6867, 7739, 9443, 12141, 12977, 13419, 14343, 14497, 18441, 18639, 20601, 23217, 28329, 36423, 38931, 43029, 43491, 48493, 54173, 55917, 69651, 74447, 84987, 90839, 116793, 129087, 130473, 145479, 147041, 162519, 208953, 223341, 254961, 272517, 339451, 350379, 391419, 436437, 441123, 487557, 521129, 670023, 817551, 921367, 1018353, 1029287, 1309311, 1323369, 1414493, 1462671, 1563387, 2010069, 2452653, 2764101, 3055059, 3087861, 3970107, 4243479, 4690161, 5285737, 6449569, 8292303, 9165177, 9263583, 9901451, 12730437, 14070483, 15857211, 19348707, 24876909, 27790749, 29704353, 37000159, 38191311, 47571633, 58046121, 89113059, 100429003, 111000477, 142714899, 174138363, 267339177, 301287009, 333001431, 703003021, 903861027, 999004293, 2109009063, 2711583081, 6327027189, 18981081567]

約数ペア:

[(1, 18981081567), (3, 6327027189), (7, 2711583081), (9, 2109009063), (19, 999004293), (21, 903861027), (27, 703003021), (57, 333001431), (63, 301287009), (71, 267339177), (109, 174138363), (133, 142714899), (171, 111000477), (189, 100429003), (213, 89113059), (327, 58046121), (399, 47571633), (497, 38191311), (513, 37000159), (639, 29704353), (683, 27790749), (763, 24876909), (981, 19348707), (1197, 15857211), (1349, 14070483), (1491, 12730437), (1917, 9901451), (2049, 9263583), (2071, 9165177), (2289, 8292303), (2943, 6449569), (3591, 5285737), (4047, 4690161), (4473, 4243479), (4781, 3970107), (6147, 3087861), (6213, 3055059), (6867, 2764101), (7739, 2452653), (9443, 2010069), (12141, 1563387), (12977, 1462671), (13419, 1414493), (14343, 1323369), (14497, 1309311), (18441, 1029287), (18639, 1018353), (20601, 921367), (23217, 817551), (28329, 670023), (36423, 521129), (38931, 487557), (43029, 441123), (43491, 436437), (48493, 391419), (54173, 350379), (55917, 339451), (69651, 272517), (74447, 254961), (84987, 223341), (90839, 208953), (116793, 162519), (129087, 147041), (130473, 145479)]