20660405

素因数分解:

$5^1\times {\mathrm{109}}^1\times {\mathrm{167}}^1\times {\mathrm{227}}^1$

素因数の和:508

約数の個数: 16

約数和(自身を含む): 25280640

約数和(自身を除く): 4620235

約数列:

[1, 5, 109, 167, 227, 545, 835, 1135, 18203, 24743, 37909, 91015, 123715, 189545, 4132081, 20660405]

約数ペア:

[(1, 20660405), (5, 4132081), (109, 189545), (167, 123715), (227, 91015), (545, 37909), (835, 24743), (1135, 18203)]