19990080

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{631}}^1$

素因数の和:665

約数の個数: 168

約数和(自身を含む): 75127104

約数和(自身を除く): 55137024

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 30, 32, 33, 36, 40, 44, 45, 48, 55, 60, 64, 66, 72, 80, 88, 90, 96, 99, 110, 120, 132, 144, 160, 165, 176, 180, 192, 198, 220, 240, 264, 288, 320, 330, 352, 360, 396, 440, 480, 495, 528, 576, 631, 660, 704, 720, 792, 880, 960, 990, 1056, 1262, 1320, 1440, 1584, 1760, 1893, 1980, 2112, 2524, 2640, 2880, 3155, 3168, 3520, 3786, 3960, 5048, 5280, 5679, 6310, 6336, 6941, 7572, 7920, 9465, 10096, 10560, 11358, 12620, 13882, 15144, 15840, 18930, 20192, 20823, 22716, 25240, 27764, 28395, 30288, 31680, 34705, 37860, 40384, 41646, 45432, 50480, 55528, 56790, 60576, 62469, 69410, 75720, 83292, 90864, 100960, 104115, 111056, 113580, 121152, 124938, 138820, 151440, 166584, 181728, 201920, 208230, 222112, 227160, 249876, 277640, 302880, 312345, 333168, 363456, 416460, 444224, 454320, 499752, 555280, 605760, 624690, 666336, 832920, 908640, 999504, 1110560, 1249380, 1332672, 1665840, 1817280, 1999008, 2221120, 2498760, 3331680, 3998016, 4997520, 6663360, 9995040, 19990080]

約数ペア:

[(1, 19990080), (2, 9995040), (3, 6663360), (4, 4997520), (5, 3998016), (6, 3331680), (8, 2498760), (9, 2221120), (10, 1999008), (11, 1817280), (12, 1665840), (15, 1332672), (16, 1249380), (18, 1110560), (20, 999504), (22, 908640), (24, 832920), (30, 666336), (32, 624690), (33, 605760), (36, 555280), (40, 499752), (44, 454320), (45, 444224), (48, 416460), (55, 363456), (60, 333168), (64, 312345), (66, 302880), (72, 277640), (80, 249876), (88, 227160), (90, 222112), (96, 208230), (99, 201920), (110, 181728), (120, 166584), (132, 151440), (144, 138820), (160, 124938), (165, 121152), (176, 113580), (180, 111056), (192, 104115), (198, 100960), (220, 90864), (240, 83292), (264, 75720), (288, 69410), (320, 62469), (330, 60576), (352, 56790), (360, 55528), (396, 50480), (440, 45432), (480, 41646), (495, 40384), (528, 37860), (576, 34705), (631, 31680), (660, 30288), (704, 28395), (720, 27764), (792, 25240), (880, 22716), (960, 20823), (990, 20192), (1056, 18930), (1262, 15840), (1320, 15144), (1440, 13882), (1584, 12620), (1760, 11358), (1893, 10560), (1980, 10096), (2112, 9465), (2524, 7920), (2640, 7572), (2880, 6941), (3155, 6336), (3168, 6310), (3520, 5679), (3786, 5280), (3960, 5048)]