81786789

素因数分解:

$3^2\times 7^1\times {\mathrm{83}}^1\times {\mathrm{15641}}^1$

素因数の和:15737

約数の個数: 24

約数和(自身を含む): 136648512

約数和(自身を除く): 54861723

約数列:

[1, 3, 7, 9, 21, 63, 83, 249, 581, 747, 1743, 5229, 15641, 46923, 109487, 140769, 328461, 985383, 1298203, 3894609, 9087421, 11683827, 27262263, 81786789]

約数ペア:

[(1, 81786789), (3, 27262263), (7, 11683827), (9, 9087421), (21, 3894609), (63, 1298203), (83, 985383), (249, 328461), (581, 140769), (747, 109487), (1743, 46923), (5229, 15641)]