31800005

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{353}}^1\times {\mathrm{419}}^1$

素因数の和:820

約数の個数: 16

約数和(自身を含む): 39251520

約数和(自身を除く): 7451515

約数列:

[1, 5, 43, 215, 353, 419, 1765, 2095, 15179, 18017, 75895, 90085, 147907, 739535, 6360001, 31800005]

約数ペア:

[(1, 31800005), (5, 6360001), (43, 739535), (215, 147907), (353, 90085), (419, 75895), (1765, 18017), (2095, 15179)]