1639206891

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{366467}}^1$

素因数の和:366551

約数の個数: 24

約数和(自身を含む): 2744112384

約数和(自身を除く): 1104905493

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 4473, 366467, 1099401, 2565269, 3298203, 7695807, 23087421, 26019157, 78057471, 182134099, 234172413, 546402297, 1639206891]

約数ペア:

[(1, 1639206891), (3, 546402297), (7, 234172413), (9, 182134099), (21, 78057471), (63, 26019157), (71, 23087421), (213, 7695807), (497, 3298203), (639, 2565269), (1491, 1099401), (4473, 366467)]