19791605

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{197}}^1\times {\mathrm{283}}^1$

素因数の和:556

約数の個数: 16

約数和(自身を含む): 24292224

約数和(自身を除く): 4500619

約数列:

[1, 5, 71, 197, 283, 355, 985, 1415, 13987, 20093, 55751, 69935, 100465, 278755, 3958321, 19791605]

約数ペア:

[(1, 19791605), (5, 3958321), (71, 278755), (197, 100465), (283, 69935), (355, 55751), (985, 20093), (1415, 13987)]