20911680

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{137}}^1$

素因数の和:213

約数の個数: 168

約数和(自身を含む): 73819512

約数和(自身を除く): 52907832

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 53, 60, 64, 72, 80, 90, 96, 106, 120, 137, 144, 159, 160, 180, 192, 212, 240, 265, 274, 288, 318, 320, 360, 411, 424, 477, 480, 530, 548, 576, 636, 685, 720, 795, 822, 848, 954, 960, 1060, 1096, 1233, 1272, 1370, 1440, 1590, 1644, 1696, 1908, 2055, 2120, 2192, 2385, 2466, 2544, 2740, 2880, 3180, 3288, 3392, 3816, 4110, 4240, 4384, 4770, 4932, 5088, 5480, 6165, 6360, 6576, 7261, 7632, 8220, 8480, 8768, 9540, 9864, 10176, 10960, 12330, 12720, 13152, 14522, 15264, 16440, 16960, 19080, 19728, 21783, 21920, 24660, 25440, 26304, 29044, 30528, 32880, 36305, 38160, 39456, 43566, 43840, 49320, 50880, 58088, 65349, 65760, 72610, 76320, 78912, 87132, 98640, 108915, 116176, 130698, 131520, 145220, 152640, 174264, 197280, 217830, 232352, 261396, 290440, 326745, 348528, 394560, 435660, 464704, 522792, 580880, 653490, 697056, 871320, 1045584, 1161760, 1306980, 1394112, 1742640, 2091168, 2323520, 2613960, 3485280, 4182336, 5227920, 6970560, 10455840, 20911680]

約数ペア:

[(1, 20911680), (2, 10455840), (3, 6970560), (4, 5227920), (5, 4182336), (6, 3485280), (8, 2613960), (9, 2323520), (10, 2091168), (12, 1742640), (15, 1394112), (16, 1306980), (18, 1161760), (20, 1045584), (24, 871320), (30, 697056), (32, 653490), (36, 580880), (40, 522792), (45, 464704), (48, 435660), (53, 394560), (60, 348528), (64, 326745), (72, 290440), (80, 261396), (90, 232352), (96, 217830), (106, 197280), (120, 174264), (137, 152640), (144, 145220), (159, 131520), (160, 130698), (180, 116176), (192, 108915), (212, 98640), (240, 87132), (265, 78912), (274, 76320), (288, 72610), (318, 65760), (320, 65349), (360, 58088), (411, 50880), (424, 49320), (477, 43840), (480, 43566), (530, 39456), (548, 38160), (576, 36305), (636, 32880), (685, 30528), (720, 29044), (795, 26304), (822, 25440), (848, 24660), (954, 21920), (960, 21783), (1060, 19728), (1096, 19080), (1233, 16960), (1272, 16440), (1370, 15264), (1440, 14522), (1590, 13152), (1644, 12720), (1696, 12330), (1908, 10960), (2055, 10176), (2120, 9864), (2192, 9540), (2385, 8768), (2466, 8480), (2544, 8220), (2740, 7632), (2880, 7261), (3180, 6576), (3288, 6360), (3392, 6165), (3816, 5480), (4110, 5088), (4240, 4932), (4384, 4770)]