81965240

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:146

約数の個数: 192

約数和(自身を含む): 236390400

約数和(自身を除く): 154425160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 31, 35, 38, 40, 49, 56, 62, 70, 71, 76, 95, 98, 124, 133, 140, 142, 152, 155, 190, 196, 217, 245, 248, 266, 280, 284, 310, 355, 380, 392, 434, 490, 497, 532, 568, 589, 620, 665, 710, 760, 868, 931, 980, 994, 1064, 1085, 1178, 1240, 1330, 1349, 1420, 1519, 1736, 1862, 1960, 1988, 2170, 2201, 2356, 2485, 2660, 2698, 2840, 2945, 3038, 3479, 3724, 3976, 4123, 4340, 4402, 4655, 4712, 4970, 5320, 5396, 5890, 6076, 6745, 6958, 7448, 7595, 8246, 8680, 8804, 9310, 9443, 9940, 10792, 11005, 11780, 12152, 13490, 13916, 15190, 15407, 16492, 17395, 17608, 18620, 18886, 19880, 20615, 22010, 23560, 26980, 27832, 28861, 30380, 30814, 32984, 34790, 37240, 37772, 41230, 41819, 44020, 47215, 53960, 57722, 60760, 61628, 66101, 69580, 75544, 77035, 82460, 83638, 88040, 94430, 107849, 115444, 123256, 132202, 139160, 144305, 154070, 164920, 167276, 188860, 209095, 215698, 230888, 264404, 288610, 292733, 308140, 330505, 334552, 377720, 418190, 431396, 528808, 539245, 577220, 585466, 616280, 661010, 836380, 862792, 1078490, 1154440, 1170932, 1322020, 1463665, 1672760, 2049131, 2156980, 2341864, 2644040, 2927330, 4098262, 4313960, 5854660, 8196524, 10245655, 11709320, 16393048, 20491310, 40982620, 81965240]

約数ペア:

[(1, 81965240), (2, 40982620), (4, 20491310), (5, 16393048), (7, 11709320), (8, 10245655), (10, 8196524), (14, 5854660), (19, 4313960), (20, 4098262), (28, 2927330), (31, 2644040), (35, 2341864), (38, 2156980), (40, 2049131), (49, 1672760), (56, 1463665), (62, 1322020), (70, 1170932), (71, 1154440), (76, 1078490), (95, 862792), (98, 836380), (124, 661010), (133, 616280), (140, 585466), (142, 577220), (152, 539245), (155, 528808), (190, 431396), (196, 418190), (217, 377720), (245, 334552), (248, 330505), (266, 308140), (280, 292733), (284, 288610), (310, 264404), (355, 230888), (380, 215698), (392, 209095), (434, 188860), (490, 167276), (497, 164920), (532, 154070), (568, 144305), (589, 139160), (620, 132202), (665, 123256), (710, 115444), (760, 107849), (868, 94430), (931, 88040), (980, 83638), (994, 82460), (1064, 77035), (1085, 75544), (1178, 69580), (1240, 66101), (1330, 61628), (1349, 60760), (1420, 57722), (1519, 53960), (1736, 47215), (1862, 44020), (1960, 41819), (1988, 41230), (2170, 37772), (2201, 37240), (2356, 34790), (2485, 32984), (2660, 30814), (2698, 30380), (2840, 28861), (2945, 27832), (3038, 26980), (3479, 23560), (3724, 22010), (3976, 20615), (4123, 19880), (4340, 18886), (4402, 18620), (4655, 17608), (4712, 17395), (4970, 16492), (5320, 15407), (5396, 15190), (5890, 13916), (6076, 13490), (6745, 12152), (6958, 11780), (7448, 11005), (7595, 10792), (8246, 9940), (8680, 9443), (8804, 9310)]