20512073428

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{541}}^1$

素因数の和:643

約数の個数: 216

約数和(自身を含む): 49216860672

約数和(自身を除く): 28704787244

約数列:

[1, 2, 4, 7, 11, 14, 19, 22, 28, 31, 38, 44, 62, 76, 77, 121, 124, 133, 154, 209, 217, 242, 266, 308, 341, 361, 418, 434, 484, 532, 541, 589, 682, 722, 836, 847, 868, 1082, 1178, 1364, 1444, 1463, 1694, 2164, 2299, 2356, 2387, 2527, 2926, 3388, 3751, 3787, 3971, 4123, 4598, 4774, 5054, 5852, 5951, 6479, 7502, 7574, 7942, 8246, 9196, 9548, 10108, 10279, 11191, 11902, 12958, 15004, 15148, 15884, 16093, 16492, 16771, 20558, 22382, 23804, 25916, 26257, 27797, 32186, 33542, 41116, 41657, 43681, 44764, 45353, 52514, 55594, 64372, 65461, 67084, 71269, 71953, 78337, 83314, 87362, 90706, 105028, 111188, 113069, 117397, 123101, 130922, 142538, 143906, 156674, 166628, 174724, 181412, 184481, 195301, 226138, 234794, 246202, 261844, 285076, 287812, 305767, 313348, 318649, 368962, 390602, 452276, 458227, 469588, 492404, 498883, 611534, 637298, 737924, 781204, 791483, 861707, 916454, 997766, 1223068, 1243759, 1274596, 1291367, 1354111, 1367107, 1582966, 1723414, 1832908, 1995532, 2029291, 2148311, 2230543, 2487518, 2582734, 2708222, 2734214, 3165932, 3446828, 3505139, 4058582, 4296622, 4461086, 4975036, 5165468, 5416444, 5468428, 6054331, 7010278, 8117164, 8593244, 8706313, 8922172, 9478777, 12108662, 14020556, 14205037, 15038177, 17412626, 18957554, 23631421, 24217324, 24535973, 28410074, 30076354, 34825252, 37915108, 38556529, 42380317, 47262842, 49071946, 56820148, 60152708, 66597641, 77113058, 84760634, 94525684, 98143892, 133195282, 154226116, 165419947, 169521268, 266390564, 269895703, 330839894, 466183487, 539791406, 661679788, 732574051, 932366974, 1079582812, 1465148102, 1864733948, 2930296204, 5128018357, 10256036714, 20512073428]

約数ペア:

[(1, 20512073428), (2, 10256036714), (4, 5128018357), (7, 2930296204), (11, 1864733948), (14, 1465148102), (19, 1079582812), (22, 932366974), (28, 732574051), (31, 661679788), (38, 539791406), (44, 466183487), (62, 330839894), (76, 269895703), (77, 266390564), (121, 169521268), (124, 165419947), (133, 154226116), (154, 133195282), (209, 98143892), (217, 94525684), (242, 84760634), (266, 77113058), (308, 66597641), (341, 60152708), (361, 56820148), (418, 49071946), (434, 47262842), (484, 42380317), (532, 38556529), (541, 37915108), (589, 34825252), (682, 30076354), (722, 28410074), (836, 24535973), (847, 24217324), (868, 23631421), (1082, 18957554), (1178, 17412626), (1364, 15038177), (1444, 14205037), (1463, 14020556), (1694, 12108662), (2164, 9478777), (2299, 8922172), (2356, 8706313), (2387, 8593244), (2527, 8117164), (2926, 7010278), (3388, 6054331), (3751, 5468428), (3787, 5416444), (3971, 5165468), (4123, 4975036), (4598, 4461086), (4774, 4296622), (5054, 4058582), (5852, 3505139), (5951, 3446828), (6479, 3165932), (7502, 2734214), (7574, 2708222), (7942, 2582734), (8246, 2487518), (9196, 2230543), (9548, 2148311), (10108, 2029291), (10279, 1995532), (11191, 1832908), (11902, 1723414), (12958, 1582966), (15004, 1367107), (15148, 1354111), (15884, 1291367), (16093, 1274596), (16492, 1243759), (16771, 1223068), (20558, 997766), (22382, 916454), (23804, 861707), (25916, 791483), (26257, 781204), (27797, 737924), (32186, 637298), (33542, 611534), (41116, 498883), (41657, 492404), (43681, 469588), (44764, 458227), (45353, 452276), (52514, 390602), (55594, 368962), (64372, 318649), (65461, 313348), (67084, 305767), (71269, 287812), (71953, 285076), (78337, 261844), (83314, 246202), (87362, 234794), (90706, 226138), (105028, 195301), (111188, 184481), (113069, 181412), (117397, 174724), (123101, 166628), (130922, 156674), (142538, 143906)]