21109440

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1999}}^1$

素因数の和:2030

約数の個数: 112

約数和(自身を含む): 73152000

約数和(自身を除く): 52042560

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, 1999, 2112, 2640, 3520, 3998, 5280, 5997, 7996, 9995, 10560, 11994, 15992, 19990, 21989, 23988, 29985, 31984, 39980, 43978, 47976, 59970, 63968, 65967, 79960, 87956, 95952, 109945, 119940, 127936, 131934, 159920, 175912, 191904, 219890, 239880, 263868, 319840, 329835, 351824, 383808, 439780, 479760, 527736, 639680, 659670, 703648, 879560, 959520, 1055472, 1319340, 1407296, 1759120, 1919040, 2110944, 2638680, 3518240, 4221888, 5277360, 7036480, 10554720, 21109440]

約数ペア:

[(1, 21109440), (2, 10554720), (3, 7036480), (4, 5277360), (5, 4221888), (6, 3518240), (8, 2638680), (10, 2110944), (11, 1919040), (12, 1759120), (15, 1407296), (16, 1319340), (20, 1055472), (22, 959520), (24, 879560), (30, 703648), (32, 659670), (33, 639680), (40, 527736), (44, 479760), (48, 439780), (55, 383808), (60, 351824), (64, 329835), (66, 319840), (80, 263868), (88, 239880), (96, 219890), (110, 191904), (120, 175912), (132, 159920), (160, 131934), (165, 127936), (176, 119940), (192, 109945), (220, 95952), (240, 87956), (264, 79960), (320, 65967), (330, 63968), (352, 59970), (440, 47976), (480, 43978), (528, 39980), (660, 31984), (704, 29985), (880, 23988), (960, 21989), (1056, 19990), (1320, 15992), (1760, 11994), (1999, 10560), (2112, 9995), (2640, 7996), (3520, 5997), (3998, 5280)]