638852877

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{321193}}^1$

素因数の和:321229

約数の個数: 24

約数和(自身を含む): 1052231544

約数和(自身を除く): 413378667

約数列:

[1, 3, 9, 13, 17, 39, 51, 117, 153, 221, 663, 1989, 321193, 963579, 2890737, 4175509, 5460281, 12526527, 16380843, 37579581, 49142529, 70983653, 212950959, 638852877]

約数ペア:

[(1, 638852877), (3, 212950959), (9, 70983653), (13, 49142529), (17, 37579581), (39, 16380843), (51, 12526527), (117, 5460281), (153, 4175509), (221, 2890737), (663, 963579), (1989, 321193)]