172013885

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{20939}}^1$

素因数の和:21028

約数の個数: 16

約数和(自身を含む): 217105920

約数和(自身を除く): 45092035

約数列:

[1, 5, 31, 53, 155, 265, 1643, 8215, 20939, 104695, 649109, 1109767, 3245545, 5548835, 34402777, 172013885]

約数ペア:

[(1, 172013885), (5, 34402777), (31, 5548835), (53, 3245545), (155, 1109767), (265, 649109), (1643, 104695), (8215, 20939)]