21838180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^3\times {\mathrm{71}}^1$

素因数の和:126

約数の個数: 96

約数和(自身を含む): 57576960

約数和(自身を除く): 35738780

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 71, 91, 130, 140, 142, 169, 182, 260, 284, 338, 355, 364, 455, 497, 676, 710, 845, 910, 923, 994, 1183, 1420, 1690, 1820, 1846, 1988, 2197, 2366, 2485, 3380, 3692, 4394, 4615, 4732, 4970, 5915, 6461, 8788, 9230, 9940, 10985, 11830, 11999, 12922, 15379, 18460, 21970, 23660, 23998, 25844, 30758, 32305, 43940, 47996, 59995, 61516, 64610, 76895, 83993, 119990, 129220, 153790, 155987, 167986, 239980, 307580, 311974, 335972, 419965, 623948, 779935, 839930, 1091909, 1559870, 1679860, 2183818, 3119740, 4367636, 5459545, 10919090, 21838180]

約数ペア:

[(1, 21838180), (2, 10919090), (4, 5459545), (5, 4367636), (7, 3119740), (10, 2183818), (13, 1679860), (14, 1559870), (20, 1091909), (26, 839930), (28, 779935), (35, 623948), (52, 419965), (65, 335972), (70, 311974), (71, 307580), (91, 239980), (130, 167986), (140, 155987), (142, 153790), (169, 129220), (182, 119990), (260, 83993), (284, 76895), (338, 64610), (355, 61516), (364, 59995), (455, 47996), (497, 43940), (676, 32305), (710, 30758), (845, 25844), (910, 23998), (923, 23660), (994, 21970), (1183, 18460), (1420, 15379), (1690, 12922), (1820, 11999), (1846, 11830), (1988, 10985), (2197, 9940), (2366, 9230), (2485, 8788), (3380, 6461), (3692, 5915), (4394, 4970), (4615, 4732)]