2157895

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{479}}^1$

素因数の和:554

約数の個数: 16

約数和(自身を含む): 2799360

約数和(自身を除く): 641465

約数列:

[1, 5, 17, 53, 85, 265, 479, 901, 2395, 4505, 8143, 25387, 40715, 126935, 431579, 2157895]

約数ペア:

[(1, 2157895), (5, 431579), (17, 126935), (53, 40715), (85, 25387), (265, 8143), (479, 4505), (901, 2395)]