71820021

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{263077}}^1$

素因数の和:263100

約数の個数: 16

約数和(自身を含む): 117858944

約数和(自身を除く): 46038923

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 263077, 789231, 1841539, 3420001, 5524617, 10260003, 23940007, 71820021]

約数ペア:

[(1, 71820021), (3, 23940007), (7, 10260003), (13, 5524617), (21, 3420001), (39, 1841539), (91, 789231), (273, 263077)]