40518891

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{20747}}^1$

素因数の和:20791

約数の個数: 24

約数和(自身を含む): 69049344

約数和(自身を除く): 28530453

約数列:

[1, 3, 7, 9, 21, 31, 63, 93, 217, 279, 651, 1953, 20747, 62241, 145229, 186723, 435687, 643157, 1307061, 1929471, 4502099, 5788413, 13506297, 40518891]

約数ペア:

[(1, 40518891), (3, 13506297), (7, 5788413), (9, 4502099), (21, 1929471), (31, 1307061), (63, 643157), (93, 435687), (217, 186723), (279, 145229), (651, 62241), (1953, 20747)]