20149920

素因数分解:

$2^5\times 3^2\times 5^1\times 7^1\times {\mathrm{1999}}^1$

素因数の和:2027

約数の個数: 144

約数和(自身を含む): 78624000

約数和(自身を除く): 58474080

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 140, 144, 160, 168, 180, 210, 224, 240, 252, 280, 288, 315, 336, 360, 420, 480, 504, 560, 630, 672, 720, 840, 1008, 1120, 1260, 1440, 1680, 1999, 2016, 2520, 3360, 3998, 5040, 5997, 7996, 9995, 10080, 11994, 13993, 15992, 17991, 19990, 23988, 27986, 29985, 31984, 35982, 39980, 41979, 47976, 55972, 59970, 63968, 69965, 71964, 79960, 83958, 89955, 95952, 111944, 119940, 125937, 139930, 143928, 159920, 167916, 179910, 191904, 209895, 223888, 239880, 251874, 279860, 287856, 319840, 335832, 359820, 419790, 447776, 479760, 503748, 559720, 575712, 629685, 671664, 719640, 839580, 959520, 1007496, 1119440, 1259370, 1343328, 1439280, 1679160, 2014992, 2238880, 2518740, 2878560, 3358320, 4029984, 5037480, 6716640, 10074960, 20149920]

約数ペア:

[(1, 20149920), (2, 10074960), (3, 6716640), (4, 5037480), (5, 4029984), (6, 3358320), (7, 2878560), (8, 2518740), (9, 2238880), (10, 2014992), (12, 1679160), (14, 1439280), (15, 1343328), (16, 1259370), (18, 1119440), (20, 1007496), (21, 959520), (24, 839580), (28, 719640), (30, 671664), (32, 629685), (35, 575712), (36, 559720), (40, 503748), (42, 479760), (45, 447776), (48, 419790), (56, 359820), (60, 335832), (63, 319840), (70, 287856), (72, 279860), (80, 251874), (84, 239880), (90, 223888), (96, 209895), (105, 191904), (112, 179910), (120, 167916), (126, 159920), (140, 143928), (144, 139930), (160, 125937), (168, 119940), (180, 111944), (210, 95952), (224, 89955), (240, 83958), (252, 79960), (280, 71964), (288, 69965), (315, 63968), (336, 59970), (360, 55972), (420, 47976), (480, 41979), (504, 39980), (560, 35982), (630, 31984), (672, 29985), (720, 27986), (840, 23988), (1008, 19990), (1120, 17991), (1260, 15992), (1440, 13993), (1680, 11994), (1999, 10080), (2016, 9995), (2520, 7996), (3360, 5997), (3998, 5040)]