720971739

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{1405403}}^1$

素因数の和:1405431

約数の個数: 16

約数和(自身を含む): 1124323200

約数和(自身を除く): 403351461

約数列:

[1, 3, 9, 19, 27, 57, 171, 513, 1405403, 4216209, 12648627, 26702657, 37945881, 80107971, 240323913, 720971739]

約数ペア:

[(1, 720971739), (3, 240323913), (9, 80107971), (19, 37945881), (27, 26702657), (57, 12648627), (171, 4216209), (513, 1405403)]