20845188

素因数分解:

$2^2\times 3^4\times 7^2\times {\mathrm{13}}^1\times {\mathrm{101}}^1$

素因数の和:144

約数の個数: 180

約数和(自身を含む): 68942412

約数和(自身を除く): 48097224

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 27, 28, 36, 39, 42, 49, 52, 54, 63, 78, 81, 84, 91, 98, 101, 108, 117, 126, 147, 156, 162, 182, 189, 196, 202, 234, 252, 273, 294, 303, 324, 351, 364, 378, 404, 441, 468, 546, 567, 588, 606, 637, 702, 707, 756, 819, 882, 909, 1053, 1092, 1134, 1212, 1274, 1313, 1323, 1404, 1414, 1638, 1764, 1818, 1911, 2106, 2121, 2268, 2457, 2548, 2626, 2646, 2727, 2828, 3276, 3636, 3822, 3939, 3969, 4212, 4242, 4914, 4949, 5252, 5292, 5454, 5733, 6363, 7371, 7644, 7878, 7938, 8181, 8484, 9191, 9828, 9898, 10908, 11466, 11817, 12726, 14742, 14847, 15756, 15876, 16362, 17199, 18382, 19089, 19796, 22932, 23634, 25452, 27573, 29484, 29694, 32724, 34398, 35451, 36764, 38178, 44541, 47268, 51597, 55146, 57267, 59388, 64337, 68796, 70902, 76356, 82719, 89082, 103194, 106353, 110292, 114534, 128674, 133623, 141804, 165438, 178164, 193011, 206388, 212706, 229068, 248157, 257348, 267246, 330876, 386022, 400869, 425412, 496314, 534492, 579033, 744471, 772044, 801738, 992628, 1158066, 1488942, 1603476, 1737099, 2316132, 2977884, 3474198, 5211297, 6948396, 10422594, 20845188]

約数ペア:

[(1, 20845188), (2, 10422594), (3, 6948396), (4, 5211297), (6, 3474198), (7, 2977884), (9, 2316132), (12, 1737099), (13, 1603476), (14, 1488942), (18, 1158066), (21, 992628), (26, 801738), (27, 772044), (28, 744471), (36, 579033), (39, 534492), (42, 496314), (49, 425412), (52, 400869), (54, 386022), (63, 330876), (78, 267246), (81, 257348), (84, 248157), (91, 229068), (98, 212706), (101, 206388), (108, 193011), (117, 178164), (126, 165438), (147, 141804), (156, 133623), (162, 128674), (182, 114534), (189, 110292), (196, 106353), (202, 103194), (234, 89082), (252, 82719), (273, 76356), (294, 70902), (303, 68796), (324, 64337), (351, 59388), (364, 57267), (378, 55146), (404, 51597), (441, 47268), (468, 44541), (546, 38178), (567, 36764), (588, 35451), (606, 34398), (637, 32724), (702, 29694), (707, 29484), (756, 27573), (819, 25452), (882, 23634), (909, 22932), (1053, 19796), (1092, 19089), (1134, 18382), (1212, 17199), (1274, 16362), (1313, 15876), (1323, 15756), (1404, 14847), (1414, 14742), (1638, 12726), (1764, 11817), (1818, 11466), (1911, 10908), (2106, 9898), (2121, 9828), (2268, 9191), (2457, 8484), (2548, 8181), (2626, 7938), (2646, 7878), (2727, 7644), (2828, 7371), (3276, 6363), (3636, 5733), (3822, 5454), (3939, 5292), (3969, 5252), (4212, 4949), (4242, 4914)]