21108480

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{239}}^1$

素因数の和:286

約数の個数: 144

約数和(自身を含む): 70640640

約数和(自身を除く): 49532160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 30, 32, 40, 46, 48, 60, 64, 69, 80, 92, 96, 115, 120, 128, 138, 160, 184, 192, 230, 239, 240, 256, 276, 320, 345, 368, 384, 460, 478, 480, 552, 640, 690, 717, 736, 768, 920, 956, 960, 1104, 1195, 1280, 1380, 1434, 1472, 1840, 1912, 1920, 2208, 2390, 2760, 2868, 2944, 3585, 3680, 3824, 3840, 4416, 4780, 5497, 5520, 5736, 5888, 7170, 7360, 7648, 8832, 9560, 10994, 11040, 11472, 14340, 14720, 15296, 16491, 17664, 19120, 21988, 22080, 22944, 27485, 28680, 29440, 30592, 32982, 38240, 43976, 44160, 45888, 54970, 57360, 61184, 65964, 76480, 82455, 87952, 88320, 91776, 109940, 114720, 131928, 152960, 164910, 175904, 183552, 219880, 229440, 263856, 305920, 329820, 351808, 439760, 458880, 527712, 659640, 703616, 879520, 917760, 1055424, 1319280, 1407232, 1759040, 2110848, 2638560, 3518080, 4221696, 5277120, 7036160, 10554240, 21108480]

約数ペア:

[(1, 21108480), (2, 10554240), (3, 7036160), (4, 5277120), (5, 4221696), (6, 3518080), (8, 2638560), (10, 2110848), (12, 1759040), (15, 1407232), (16, 1319280), (20, 1055424), (23, 917760), (24, 879520), (30, 703616), (32, 659640), (40, 527712), (46, 458880), (48, 439760), (60, 351808), (64, 329820), (69, 305920), (80, 263856), (92, 229440), (96, 219880), (115, 183552), (120, 175904), (128, 164910), (138, 152960), (160, 131928), (184, 114720), (192, 109940), (230, 91776), (239, 88320), (240, 87952), (256, 82455), (276, 76480), (320, 65964), (345, 61184), (368, 57360), (384, 54970), (460, 45888), (478, 44160), (480, 43976), (552, 38240), (640, 32982), (690, 30592), (717, 29440), (736, 28680), (768, 27485), (920, 22944), (956, 22080), (960, 21988), (1104, 19120), (1195, 17664), (1280, 16491), (1380, 15296), (1434, 14720), (1472, 14340), (1840, 11472), (1912, 11040), (1920, 10994), (2208, 9560), (2390, 8832), (2760, 7648), (2868, 7360), (2944, 7170), (3585, 5888), (3680, 5736), (3824, 5520), (3840, 5497), (4416, 4780)]