20213760

素因数分解:

$2^{12}\times 3^1\times 5^1\times 7^1\times {\mathrm{47}}^1$

素因数の和:86

約数の個数: 208

約数和(自身を含む): 75488256

約数和(自身を除く): 55274496

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 47, 48, 56, 60, 64, 70, 80, 84, 94, 96, 105, 112, 120, 128, 140, 141, 160, 168, 188, 192, 210, 224, 235, 240, 256, 280, 282, 320, 329, 336, 376, 384, 420, 448, 470, 480, 512, 560, 564, 640, 658, 672, 705, 752, 768, 840, 896, 940, 960, 987, 1024, 1120, 1128, 1280, 1316, 1344, 1410, 1504, 1536, 1645, 1680, 1792, 1880, 1920, 1974, 2048, 2240, 2256, 2560, 2632, 2688, 2820, 3008, 3072, 3290, 3360, 3584, 3760, 3840, 3948, 4096, 4480, 4512, 4935, 5120, 5264, 5376, 5640, 6016, 6144, 6580, 6720, 7168, 7520, 7680, 7896, 8960, 9024, 9870, 10240, 10528, 10752, 11280, 12032, 12288, 13160, 13440, 14336, 15040, 15360, 15792, 17920, 18048, 19740, 20480, 21056, 21504, 22560, 24064, 26320, 26880, 28672, 30080, 30720, 31584, 35840, 36096, 39480, 42112, 43008, 45120, 48128, 52640, 53760, 60160, 61440, 63168, 71680, 72192, 78960, 84224, 86016, 90240, 96256, 105280, 107520, 120320, 126336, 143360, 144384, 157920, 168448, 180480, 192512, 210560, 215040, 240640, 252672, 288768, 315840, 336896, 360960, 421120, 430080, 481280, 505344, 577536, 631680, 673792, 721920, 842240, 962560, 1010688, 1263360, 1347584, 1443840, 1684480, 2021376, 2526720, 2887680, 3368960, 4042752, 5053440, 6737920, 10106880, 20213760]

約数ペア:

[(1, 20213760), (2, 10106880), (3, 6737920), (4, 5053440), (5, 4042752), (6, 3368960), (7, 2887680), (8, 2526720), (10, 2021376), (12, 1684480), (14, 1443840), (15, 1347584), (16, 1263360), (20, 1010688), (21, 962560), (24, 842240), (28, 721920), (30, 673792), (32, 631680), (35, 577536), (40, 505344), (42, 481280), (47, 430080), (48, 421120), (56, 360960), (60, 336896), (64, 315840), (70, 288768), (80, 252672), (84, 240640), (94, 215040), (96, 210560), (105, 192512), (112, 180480), (120, 168448), (128, 157920), (140, 144384), (141, 143360), (160, 126336), (168, 120320), (188, 107520), (192, 105280), (210, 96256), (224, 90240), (235, 86016), (240, 84224), (256, 78960), (280, 72192), (282, 71680), (320, 63168), (329, 61440), (336, 60160), (376, 53760), (384, 52640), (420, 48128), (448, 45120), (470, 43008), (480, 42112), (512, 39480), (560, 36096), (564, 35840), (640, 31584), (658, 30720), (672, 30080), (705, 28672), (752, 26880), (768, 26320), (840, 24064), (896, 22560), (940, 21504), (960, 21056), (987, 20480), (1024, 19740), (1120, 18048), (1128, 17920), (1280, 15792), (1316, 15360), (1344, 15040), (1410, 14336), (1504, 13440), (1536, 13160), (1645, 12288), (1680, 12032), (1792, 11280), (1880, 10752), (1920, 10528), (1974, 10240), (2048, 9870), (2240, 9024), (2256, 8960), (2560, 7896), (2632, 7680), (2688, 7520), (2820, 7168), (3008, 6720), (3072, 6580), (3290, 6144), (3360, 6016), (3584, 5640), (3760, 5376), (3840, 5264), (3948, 5120), (4096, 4935), (4480, 4512)]