81531450

素因数分解:

$2^1\times 3^2\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{181}}^1$

素因数の和:230

約数の個数: 288

約数和(自身を含む): 295731072

約数和(自身を除く): 214199622

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 11, 13, 14, 15, 18, 21, 22, 25, 26, 30, 33, 35, 39, 42, 45, 50, 55, 63, 65, 66, 70, 75, 77, 78, 90, 91, 99, 105, 110, 117, 126, 130, 143, 150, 154, 165, 175, 181, 182, 195, 198, 210, 225, 231, 234, 273, 275, 286, 315, 325, 330, 350, 362, 385, 390, 429, 450, 455, 462, 495, 525, 543, 546, 550, 585, 630, 650, 693, 715, 770, 819, 825, 858, 905, 910, 975, 990, 1001, 1050, 1086, 1155, 1170, 1267, 1287, 1365, 1386, 1430, 1575, 1629, 1638, 1650, 1810, 1925, 1950, 1991, 2002, 2145, 2275, 2310, 2353, 2475, 2534, 2574, 2715, 2730, 2925, 3003, 3150, 3258, 3465, 3575, 3801, 3850, 3982, 4095, 4290, 4525, 4550, 4706, 4950, 5005, 5430, 5775, 5850, 5973, 6006, 6335, 6435, 6825, 6930, 7059, 7150, 7602, 8145, 8190, 9009, 9050, 9955, 10010, 10725, 11403, 11550, 11765, 11946, 12670, 12870, 13575, 13650, 13937, 14118, 15015, 16290, 16471, 17325, 17919, 18018, 19005, 19910, 20475, 21177, 21450, 22806, 23530, 25025, 25883, 27150, 27874, 29865, 30030, 31675, 32175, 32942, 34650, 35295, 35838, 38010, 40725, 40950, 41811, 42354, 45045, 49413, 49775, 50050, 51766, 57015, 58825, 59730, 63350, 64350, 69685, 70590, 75075, 77649, 81450, 82355, 83622, 89595, 90090, 95025, 98826, 99550, 105885, 114030, 117650, 125433, 129415, 139370, 148239, 149325, 150150, 155298, 164710, 176475, 179190, 181181, 190050, 209055, 211770, 225225, 232947, 247065, 250866, 258830, 285075, 296478, 298650, 348425, 352950, 362362, 388245, 411775, 418110, 447975, 450450, 465894, 494130, 529425, 543543, 570150, 627165, 647075, 696850, 741195, 776490, 823550, 895950, 905905, 1045275, 1058850, 1087086, 1164735, 1235325, 1254330, 1294150, 1482390, 1630629, 1811810, 1941225, 2090550, 2329470, 2470650, 2717715, 3135825, 3261258, 3705975, 3882450, 4529525, 5435430, 5823675, 6271650, 7411950, 8153145, 9059050, 11647350, 13588575, 16306290, 27177150, 40765725, 81531450]

約数ペア:

[(1, 81531450), (2, 40765725), (3, 27177150), (5, 16306290), (6, 13588575), (7, 11647350), (9, 9059050), (10, 8153145), (11, 7411950), (13, 6271650), (14, 5823675), (15, 5435430), (18, 4529525), (21, 3882450), (22, 3705975), (25, 3261258), (26, 3135825), (30, 2717715), (33, 2470650), (35, 2329470), (39, 2090550), (42, 1941225), (45, 1811810), (50, 1630629), (55, 1482390), (63, 1294150), (65, 1254330), (66, 1235325), (70, 1164735), (75, 1087086), (77, 1058850), (78, 1045275), (90, 905905), (91, 895950), (99, 823550), (105, 776490), (110, 741195), (117, 696850), (126, 647075), (130, 627165), (143, 570150), (150, 543543), (154, 529425), (165, 494130), (175, 465894), (181, 450450), (182, 447975), (195, 418110), (198, 411775), (210, 388245), (225, 362362), (231, 352950), (234, 348425), (273, 298650), (275, 296478), (286, 285075), (315, 258830), (325, 250866), (330, 247065), (350, 232947), (362, 225225), (385, 211770), (390, 209055), (429, 190050), (450, 181181), (455, 179190), (462, 176475), (495, 164710), (525, 155298), (543, 150150), (546, 149325), (550, 148239), (585, 139370), (630, 129415), (650, 125433), (693, 117650), (715, 114030), (770, 105885), (819, 99550), (825, 98826), (858, 95025), (905, 90090), (910, 89595), (975, 83622), (990, 82355), (1001, 81450), (1050, 77649), (1086, 75075), (1155, 70590), (1170, 69685), (1267, 64350), (1287, 63350), (1365, 59730), (1386, 58825), (1430, 57015), (1575, 51766), (1629, 50050), (1638, 49775), (1650, 49413), (1810, 45045), (1925, 42354), (1950, 41811), (1991, 40950), (2002, 40725), (2145, 38010), (2275, 35838), (2310, 35295), (2353, 34650), (2475, 32942), (2534, 32175), (2574, 31675), (2715, 30030), (2730, 29865), (2925, 27874), (3003, 27150), (3150, 25883), (3258, 25025), (3465, 23530), (3575, 22806), (3801, 21450), (3850, 21177), (3982, 20475), (4095, 19910), (4290, 19005), (4525, 18018), (4550, 17919), (4706, 17325), (4950, 16471), (5005, 16290), (5430, 15015), (5775, 14118), (5850, 13937), (5973, 13650), (6006, 13575), (6335, 12870), (6435, 12670), (6825, 11946), (6930, 11765), (7059, 11550), (7150, 11403), (7602, 10725), (8145, 10010), (8190, 9955), (9009, 9050)]