399221170

素因数分解:

$2^1\times 5^1\times {\mathrm{157}}^1\times {\mathrm{254281}}^1$

素因数の和:254445

約数の個数: 16

約数和(自身を含む): 723178008

約数和(自身を除く): 323956838

約数列:

[1, 2, 5, 10, 157, 314, 785, 1570, 254281, 508562, 1271405, 2542810, 39922117, 79844234, 199610585, 399221170]

約数ペア:

[(1, 399221170), (2, 199610585), (5, 79844234), (10, 39922117), (157, 2542810), (314, 1271405), (785, 508562), (1570, 254281)]