19729920

素因数分解:

$2^9\times 3^1\times 5^1\times 7^1\times {\mathrm{367}}^1$

素因数の和:400

約数の個数: 160

約数和(自身を含む): 72281088

約数和(自身を除く): 52551168

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, 48, 56, 60, 64, 70, 80, 84, 96, 105, 112, 120, 128, 140, 160, 168, 192, 210, 224, 240, 256, 280, 320, 336, 367, 384, 420, 448, 480, 512, 560, 640, 672, 734, 768, 840, 896, 960, 1101, 1120, 1280, 1344, 1468, 1536, 1680, 1792, 1835, 1920, 2202, 2240, 2560, 2569, 2688, 2936, 3360, 3584, 3670, 3840, 4404, 4480, 5138, 5376, 5505, 5872, 6720, 7340, 7680, 7707, 8808, 8960, 10276, 10752, 11010, 11744, 12845, 13440, 14680, 15414, 17616, 17920, 20552, 22020, 23488, 25690, 26880, 29360, 30828, 35232, 38535, 41104, 44040, 46976, 51380, 53760, 58720, 61656, 70464, 77070, 82208, 88080, 93952, 102760, 117440, 123312, 140928, 154140, 164416, 176160, 187904, 205520, 234880, 246624, 281856, 308280, 328832, 352320, 411040, 469760, 493248, 563712, 616560, 657664, 704640, 822080, 939520, 986496, 1233120, 1315328, 1409280, 1644160, 1972992, 2466240, 2818560, 3288320, 3945984, 4932480, 6576640, 9864960, 19729920]

約数ペア:

[(1, 19729920), (2, 9864960), (3, 6576640), (4, 4932480), (5, 3945984), (6, 3288320), (7, 2818560), (8, 2466240), (10, 1972992), (12, 1644160), (14, 1409280), (15, 1315328), (16, 1233120), (20, 986496), (21, 939520), (24, 822080), (28, 704640), (30, 657664), (32, 616560), (35, 563712), (40, 493248), (42, 469760), (48, 411040), (56, 352320), (60, 328832), (64, 308280), (70, 281856), (80, 246624), (84, 234880), (96, 205520), (105, 187904), (112, 176160), (120, 164416), (128, 154140), (140, 140928), (160, 123312), (168, 117440), (192, 102760), (210, 93952), (224, 88080), (240, 82208), (256, 77070), (280, 70464), (320, 61656), (336, 58720), (367, 53760), (384, 51380), (420, 46976), (448, 44040), (480, 41104), (512, 38535), (560, 35232), (640, 30828), (672, 29360), (734, 26880), (768, 25690), (840, 23488), (896, 22020), (960, 20552), (1101, 17920), (1120, 17616), (1280, 15414), (1344, 14680), (1468, 13440), (1536, 12845), (1680, 11744), (1792, 11010), (1835, 10752), (1920, 10276), (2202, 8960), (2240, 8808), (2560, 7707), (2569, 7680), (2688, 7340), (2936, 6720), (3360, 5872), (3584, 5505), (3670, 5376), (3840, 5138), (4404, 4480)]