20979735

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{199807}}^1$

素因数の和:199822

約数の個数: 16

約数和(自身を含む): 38363136

約数和(自身を除く): 17383401

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 199807, 599421, 999035, 1398649, 2997105, 4195947, 6993245, 20979735]

約数ペア:

[(1, 20979735), (3, 6993245), (5, 4195947), (7, 2997105), (15, 1398649), (21, 999035), (35, 599421), (105, 199807)]