80514800

素因数分解:

$2^4\times 5^2\times {\mathrm{201287}}^1$

素因数の和:201305

約数の個数: 30

約数和(自身を含む): 193437768

約数和(自身を除く): 112922968

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 201287, 402574, 805148, 1006435, 1610296, 2012870, 3220592, 4025740, 5032175, 8051480, 10064350, 16102960, 20128700, 40257400, 80514800]

約数ペア:

[(1, 80514800), (2, 40257400), (4, 20128700), (5, 16102960), (8, 10064350), (10, 8051480), (16, 5032175), (20, 4025740), (25, 3220592), (40, 2012870), (50, 1610296), (80, 1006435), (100, 805148), (200, 402574), (400, 201287)]