20485080

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{739}}^1$

素因数の和:774

約数の個数: 192

約数和(自身を含む): 83116800

約数和(自身を除く): 62631720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 24, 28, 30, 33, 35, 36, 40, 42, 44, 45, 55, 56, 60, 63, 66, 70, 72, 77, 84, 88, 90, 99, 105, 110, 120, 126, 132, 140, 154, 165, 168, 180, 198, 210, 220, 231, 252, 264, 280, 308, 315, 330, 360, 385, 396, 420, 440, 462, 495, 504, 616, 630, 660, 693, 739, 770, 792, 840, 924, 990, 1155, 1260, 1320, 1386, 1478, 1540, 1848, 1980, 2217, 2310, 2520, 2772, 2956, 3080, 3465, 3695, 3960, 4434, 4620, 5173, 5544, 5912, 6651, 6930, 7390, 8129, 8868, 9240, 10346, 11085, 13302, 13860, 14780, 15519, 16258, 17736, 20692, 22170, 24387, 25865, 26604, 27720, 29560, 31038, 32516, 33255, 40645, 41384, 44340, 46557, 48774, 51730, 53208, 56903, 62076, 65032, 66510, 73161, 77595, 81290, 88680, 93114, 97548, 103460, 113806, 121935, 124152, 133020, 146322, 155190, 162580, 170709, 186228, 195096, 206920, 227612, 232785, 243870, 266040, 284515, 292644, 310380, 325160, 341418, 365805, 372456, 455224, 465570, 487740, 512127, 569030, 585288, 620760, 682836, 731610, 853545, 931140, 975480, 1024254, 1138060, 1365672, 1463220, 1707090, 1862280, 2048508, 2276120, 2560635, 2926440, 3414180, 4097016, 5121270, 6828360, 10242540, 20485080]

約数ペア:

[(1, 20485080), (2, 10242540), (3, 6828360), (4, 5121270), (5, 4097016), (6, 3414180), (7, 2926440), (8, 2560635), (9, 2276120), (10, 2048508), (11, 1862280), (12, 1707090), (14, 1463220), (15, 1365672), (18, 1138060), (20, 1024254), (21, 975480), (22, 931140), (24, 853545), (28, 731610), (30, 682836), (33, 620760), (35, 585288), (36, 569030), (40, 512127), (42, 487740), (44, 465570), (45, 455224), (55, 372456), (56, 365805), (60, 341418), (63, 325160), (66, 310380), (70, 292644), (72, 284515), (77, 266040), (84, 243870), (88, 232785), (90, 227612), (99, 206920), (105, 195096), (110, 186228), (120, 170709), (126, 162580), (132, 155190), (140, 146322), (154, 133020), (165, 124152), (168, 121935), (180, 113806), (198, 103460), (210, 97548), (220, 93114), (231, 88680), (252, 81290), (264, 77595), (280, 73161), (308, 66510), (315, 65032), (330, 62076), (360, 56903), (385, 53208), (396, 51730), (420, 48774), (440, 46557), (462, 44340), (495, 41384), (504, 40645), (616, 33255), (630, 32516), (660, 31038), (693, 29560), (739, 27720), (770, 26604), (792, 25865), (840, 24387), (924, 22170), (990, 20692), (1155, 17736), (1260, 16258), (1320, 15519), (1386, 14780), (1478, 13860), (1540, 13302), (1848, 11085), (1980, 10346), (2217, 9240), (2310, 8868), (2520, 8129), (2772, 7390), (2956, 6930), (3080, 6651), (3465, 5912), (3695, 5544), (3960, 5173), (4434, 4620)]