21088320

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1997}}^1$

素因数の和:2028

約数の個数: 112

約数和(自身を含む): 73078848

約数和(自身を除く): 51990528

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 32, 33, 40, 44, 48, 55, 60, 64, 66, 80, 88, 96, 110, 120, 132, 160, 165, 176, 192, 220, 240, 264, 320, 330, 352, 440, 480, 528, 660, 704, 880, 960, 1056, 1320, 1760, 1997, 2112, 2640, 3520, 3994, 5280, 5991, 7988, 9985, 10560, 11982, 15976, 19970, 21967, 23964, 29955, 31952, 39940, 43934, 47928, 59910, 63904, 65901, 79880, 87868, 95856, 109835, 119820, 127808, 131802, 159760, 175736, 191712, 219670, 239640, 263604, 319520, 329505, 351472, 383424, 439340, 479280, 527208, 639040, 659010, 702944, 878680, 958560, 1054416, 1318020, 1405888, 1757360, 1917120, 2108832, 2636040, 3514720, 4217664, 5272080, 7029440, 10544160, 21088320]

約数ペア:

[(1, 21088320), (2, 10544160), (3, 7029440), (4, 5272080), (5, 4217664), (6, 3514720), (8, 2636040), (10, 2108832), (11, 1917120), (12, 1757360), (15, 1405888), (16, 1318020), (20, 1054416), (22, 958560), (24, 878680), (30, 702944), (32, 659010), (33, 639040), (40, 527208), (44, 479280), (48, 439340), (55, 383424), (60, 351472), (64, 329505), (66, 319520), (80, 263604), (88, 239640), (96, 219670), (110, 191712), (120, 175736), (132, 159760), (160, 131802), (165, 127808), (176, 119820), (192, 109835), (220, 95856), (240, 87868), (264, 79880), (320, 65901), (330, 63904), (352, 59910), (440, 47928), (480, 43934), (528, 39940), (660, 31952), (704, 29955), (880, 23964), (960, 21967), (1056, 19970), (1320, 15976), (1760, 11982), (1997, 10560), (2112, 9985), (2640, 7988), (3520, 5991), (3994, 5280)]