20807849868

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^2\times {\mathrm{71}}^1\times {\mathrm{144511}}^1$

素因数の和:144615

約数の個数: 72

約数和(自身を含む): 53314523136

約数和(自身を除く): 32506673268

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 71, 78, 142, 156, 169, 213, 284, 338, 426, 507, 676, 852, 923, 1014, 1846, 2028, 2769, 3692, 5538, 11076, 11999, 23998, 35997, 47996, 71994, 143988, 144511, 289022, 433533, 578044, 867066, 1734132, 1878643, 3757286, 5635929, 7514572, 10260281, 11271858, 20520562, 22543716, 24422359, 30780843, 41041124, 48844718, 61561686, 73267077, 97689436, 123123372, 133383653, 146534154, 266767306, 293068308, 400150959, 533534612, 800301918, 1600603836, 1733987489, 3467974978, 5201962467, 6935949956, 10403924934, 20807849868]

約数ペア:

[(1, 20807849868), (2, 10403924934), (3, 6935949956), (4, 5201962467), (6, 3467974978), (12, 1733987489), (13, 1600603836), (26, 800301918), (39, 533534612), (52, 400150959), (71, 293068308), (78, 266767306), (142, 146534154), (156, 133383653), (169, 123123372), (213, 97689436), (284, 73267077), (338, 61561686), (426, 48844718), (507, 41041124), (676, 30780843), (852, 24422359), (923, 22543716), (1014, 20520562), (1846, 11271858), (2028, 10260281), (2769, 7514572), (3692, 5635929), (5538, 3757286), (11076, 1878643), (11999, 1734132), (23998, 867066), (35997, 578044), (47996, 433533), (71994, 289022), (143988, 144511)]