2781321

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{173}}^1\times {\mathrm{233}}^1$

素因数の和:432

約数の個数: 16

約数和(自身を含む): 3908736

約数和(自身を除く): 1127415

約数列:

[1, 3, 23, 69, 173, 233, 519, 699, 3979, 5359, 11937, 16077, 40309, 120927, 927107, 2781321]

約数ペア:

[(1, 2781321), (3, 927107), (23, 120927), (69, 40309), (173, 16077), (233, 11937), (519, 5359), (699, 3979)]