20990200

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1$

素因数の和:110

約数の個数: 192

約数和(自身を含む): 64281600

約数和(自身を除く): 43291400

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 25, 28, 29, 35, 40, 44, 47, 50, 55, 56, 58, 70, 77, 88, 94, 100, 110, 116, 140, 145, 154, 175, 188, 200, 203, 220, 232, 235, 275, 280, 290, 308, 319, 329, 350, 376, 385, 406, 440, 470, 517, 550, 580, 616, 638, 658, 700, 725, 770, 812, 940, 1015, 1034, 1100, 1160, 1175, 1276, 1316, 1363, 1400, 1450, 1540, 1595, 1624, 1645, 1880, 1925, 2030, 2068, 2200, 2233, 2350, 2552, 2585, 2632, 2726, 2900, 3080, 3190, 3290, 3619, 3850, 4060, 4136, 4466, 4700, 5075, 5170, 5452, 5800, 6380, 6580, 6815, 7238, 7700, 7975, 8120, 8225, 8932, 9400, 9541, 10150, 10340, 10904, 11165, 12760, 12925, 13160, 13630, 14476, 14993, 15400, 15950, 16450, 17864, 18095, 19082, 20300, 20680, 22330, 25850, 27260, 28952, 29986, 31900, 32900, 34075, 36190, 38164, 40600, 44660, 47705, 51700, 54520, 55825, 59972, 63800, 65800, 68150, 72380, 74965, 76328, 89320, 90475, 95410, 103400, 104951, 111650, 119944, 136300, 144760, 149930, 180950, 190820, 209902, 223300, 238525, 272600, 299860, 361900, 374825, 381640, 419804, 446600, 477050, 524755, 599720, 723800, 749650, 839608, 954100, 1049510, 1499300, 1908200, 2099020, 2623775, 2998600, 4198040, 5247550, 10495100, 20990200]

約数ペア:

[(1, 20990200), (2, 10495100), (4, 5247550), (5, 4198040), (7, 2998600), (8, 2623775), (10, 2099020), (11, 1908200), (14, 1499300), (20, 1049510), (22, 954100), (25, 839608), (28, 749650), (29, 723800), (35, 599720), (40, 524755), (44, 477050), (47, 446600), (50, 419804), (55, 381640), (56, 374825), (58, 361900), (70, 299860), (77, 272600), (88, 238525), (94, 223300), (100, 209902), (110, 190820), (116, 180950), (140, 149930), (145, 144760), (154, 136300), (175, 119944), (188, 111650), (200, 104951), (203, 103400), (220, 95410), (232, 90475), (235, 89320), (275, 76328), (280, 74965), (290, 72380), (308, 68150), (319, 65800), (329, 63800), (350, 59972), (376, 55825), (385, 54520), (406, 51700), (440, 47705), (470, 44660), (517, 40600), (550, 38164), (580, 36190), (616, 34075), (638, 32900), (658, 31900), (700, 29986), (725, 28952), (770, 27260), (812, 25850), (940, 22330), (1015, 20680), (1034, 20300), (1100, 19082), (1160, 18095), (1175, 17864), (1276, 16450), (1316, 15950), (1363, 15400), (1400, 14993), (1450, 14476), (1540, 13630), (1595, 13160), (1624, 12925), (1645, 12760), (1880, 11165), (1925, 10904), (2030, 10340), (2068, 10150), (2200, 9541), (2233, 9400), (2350, 8932), (2552, 8225), (2585, 8120), (2632, 7975), (2726, 7700), (2900, 7238), (3080, 6815), (3190, 6580), (3290, 6380), (3619, 5800), (3850, 5452), (4060, 5170), (4136, 5075), (4466, 4700)]