69921729

素因数分解:

$3^2\times {\mathrm{19}}^2\times {\mathrm{21521}}^1$

素因数の和:21565

約数の個数: 18

約数和(自身を含む): 106598466

約数和(自身を除く): 36676737

約数列:

[1, 3, 9, 19, 57, 171, 361, 1083, 3249, 21521, 64563, 193689, 408899, 1226697, 3680091, 7769081, 23307243, 69921729]

約数ペア:

[(1, 69921729), (3, 23307243), (9, 7769081), (19, 3680091), (57, 1226697), (171, 408899), (361, 193689), (1083, 64563), (3249, 21521)]