20897800

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1$

素因数の和:116

約数の個数: 192

約数和(自身を含む): 64281600

約数和(自身を除く): 43383800

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 23, 25, 28, 35, 40, 44, 46, 50, 55, 56, 59, 70, 77, 88, 92, 100, 110, 115, 118, 140, 154, 161, 175, 184, 200, 220, 230, 236, 253, 275, 280, 295, 308, 322, 350, 385, 413, 440, 460, 472, 506, 550, 575, 590, 616, 644, 649, 700, 770, 805, 826, 920, 1012, 1100, 1150, 1180, 1265, 1288, 1298, 1357, 1400, 1475, 1540, 1610, 1652, 1771, 1925, 2024, 2065, 2200, 2300, 2360, 2530, 2596, 2714, 2950, 3080, 3220, 3245, 3304, 3542, 3850, 4025, 4130, 4543, 4600, 5060, 5192, 5428, 5900, 6325, 6440, 6490, 6785, 7084, 7700, 8050, 8260, 8855, 9086, 9499, 10120, 10325, 10856, 11800, 12650, 12980, 13570, 14168, 14927, 15400, 16100, 16225, 16520, 17710, 18172, 18998, 20650, 22715, 25300, 25960, 27140, 29854, 32200, 32450, 33925, 35420, 36344, 37996, 41300, 44275, 45430, 47495, 50600, 54280, 59708, 64900, 67850, 70840, 74635, 75992, 82600, 88550, 90860, 94990, 104489, 113575, 119416, 129800, 135700, 149270, 177100, 181720, 189980, 208978, 227150, 237475, 271400, 298540, 354200, 373175, 379960, 417956, 454300, 474950, 522445, 597080, 746350, 835912, 908600, 949900, 1044890, 1492700, 1899800, 2089780, 2612225, 2985400, 4179560, 5224450, 10448900, 20897800]

約数ペア:

[(1, 20897800), (2, 10448900), (4, 5224450), (5, 4179560), (7, 2985400), (8, 2612225), (10, 2089780), (11, 1899800), (14, 1492700), (20, 1044890), (22, 949900), (23, 908600), (25, 835912), (28, 746350), (35, 597080), (40, 522445), (44, 474950), (46, 454300), (50, 417956), (55, 379960), (56, 373175), (59, 354200), (70, 298540), (77, 271400), (88, 237475), (92, 227150), (100, 208978), (110, 189980), (115, 181720), (118, 177100), (140, 149270), (154, 135700), (161, 129800), (175, 119416), (184, 113575), (200, 104489), (220, 94990), (230, 90860), (236, 88550), (253, 82600), (275, 75992), (280, 74635), (295, 70840), (308, 67850), (322, 64900), (350, 59708), (385, 54280), (413, 50600), (440, 47495), (460, 45430), (472, 44275), (506, 41300), (550, 37996), (575, 36344), (590, 35420), (616, 33925), (644, 32450), (649, 32200), (700, 29854), (770, 27140), (805, 25960), (826, 25300), (920, 22715), (1012, 20650), (1100, 18998), (1150, 18172), (1180, 17710), (1265, 16520), (1288, 16225), (1298, 16100), (1357, 15400), (1400, 14927), (1475, 14168), (1540, 13570), (1610, 12980), (1652, 12650), (1771, 11800), (1925, 10856), (2024, 10325), (2065, 10120), (2200, 9499), (2300, 9086), (2360, 8855), (2530, 8260), (2596, 8050), (2714, 7700), (2950, 7084), (3080, 6785), (3220, 6490), (3245, 6440), (3304, 6325), (3542, 5900), (3850, 5428), (4025, 5192), (4130, 5060), (4543, 4600)]