643806729

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{661}}^1\times {\mathrm{3491}}^1$

素因数の和:4189

約数の個数: 24

約数和(自身を含む): 961668864

約数和(自身を除く): 317862135

約数列:

[1, 3, 9, 31, 93, 279, 661, 1983, 3491, 5949, 10473, 20491, 31419, 61473, 108221, 184419, 324663, 973989, 2307551, 6922653, 20767959, 71534081, 214602243, 643806729]

約数ペア:

[(1, 643806729), (3, 214602243), (9, 71534081), (31, 20767959), (93, 6922653), (279, 2307551), (661, 973989), (1983, 324663), (3491, 184419), (5949, 108221), (10473, 61473), (20491, 31419)]