821432157

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{42379}}^1$

素因数の和:42473

約数の個数: 32

約数和(自身を含む): 1367009280

約数和(自身を除く): 545577123

約数列:

[1, 3, 7, 13, 21, 39, 71, 91, 213, 273, 497, 923, 1491, 2769, 6461, 19383, 42379, 127137, 296653, 550927, 889959, 1652781, 3008909, 3856489, 9026727, 11569467, 21062363, 39115817, 63187089, 117347451, 273810719, 821432157]

約数ペア:

[(1, 821432157), (3, 273810719), (7, 117347451), (13, 63187089), (21, 39115817), (39, 21062363), (71, 11569467), (91, 9026727), (213, 3856489), (273, 3008909), (497, 1652781), (923, 889959), (1491, 550927), (2769, 296653), (6461, 127137), (19383, 42379)]