20178163719

素因数分解:

$3^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{197}}^1\times {\mathrm{449}}^1$

素因数の和:750

約数の個数: 128

約数和(自身を含む): 36951552000

約数和(自身を除く): 16773388281

約数列:

[1, 3, 7, 9, 17, 21, 27, 51, 63, 71, 119, 153, 189, 197, 213, 357, 449, 459, 497, 591, 639, 1071, 1207, 1347, 1379, 1491, 1773, 1917, 3143, 3213, 3349, 3621, 4041, 4137, 4473, 5319, 7633, 8449, 9429, 10047, 10863, 12123, 12411, 13419, 13987, 22899, 23443, 25347, 28287, 30141, 31879, 32589, 37233, 41961, 53431, 68697, 70329, 76041, 84861, 88453, 90423, 95637, 97909, 125883, 160293, 206091, 210987, 223153, 228123, 237779, 265359, 286911, 293727, 377649, 480879, 541943, 619171, 632961, 669459, 713337, 796077, 860733, 881181, 1442637, 1503701, 1625829, 1664453, 1857513, 2008377, 2140011, 2388231, 2643543, 3793601, 4511103, 4877487, 4993359, 5572539, 6025131, 6280163, 6420033, 10525907, 11380803, 13533309, 14632461, 14980077, 16717617, 18840489, 31577721, 34142409, 40599927, 43961141, 44940231, 56521467, 94733163, 102427227, 106762771, 131883423, 169564401, 284199489, 320288313, 395650269, 747339397, 960864939, 1186950807, 2242018191, 2882594817, 6726054573, 20178163719]

約数ペア:

[(1, 20178163719), (3, 6726054573), (7, 2882594817), (9, 2242018191), (17, 1186950807), (21, 960864939), (27, 747339397), (51, 395650269), (63, 320288313), (71, 284199489), (119, 169564401), (153, 131883423), (189, 106762771), (197, 102427227), (213, 94733163), (357, 56521467), (449, 44940231), (459, 43961141), (497, 40599927), (591, 34142409), (639, 31577721), (1071, 18840489), (1207, 16717617), (1347, 14980077), (1379, 14632461), (1491, 13533309), (1773, 11380803), (1917, 10525907), (3143, 6420033), (3213, 6280163), (3349, 6025131), (3621, 5572539), (4041, 4993359), (4137, 4877487), (4473, 4511103), (5319, 3793601), (7633, 2643543), (8449, 2388231), (9429, 2140011), (10047, 2008377), (10863, 1857513), (12123, 1664453), (12411, 1625829), (13419, 1503701), (13987, 1442637), (22899, 881181), (23443, 860733), (25347, 796077), (28287, 713337), (30141, 669459), (31879, 632961), (32589, 619171), (37233, 541943), (41961, 480879), (53431, 377649), (68697, 293727), (70329, 286911), (76041, 265359), (84861, 237779), (88453, 228123), (90423, 223153), (95637, 210987), (97909, 206091), (125883, 160293)]