20615855

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{16693}}^1$

素因数の和:16730

約数の個数: 16

約数和(自身を含む): 28045920

約数和(自身を除く): 7430065

約数列:

[1, 5, 13, 19, 65, 95, 247, 1235, 16693, 83465, 217009, 317167, 1085045, 1585835, 4123171, 20615855]

約数ペア:

[(1, 20615855), (5, 4123171), (13, 1585835), (19, 1085045), (65, 317167), (95, 217009), (247, 83465), (1235, 16693)]