19964581

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{5351}}^1$

素因数の和:5412

約数の個数: 16

約数和(自身を含む): 25175808

約数和(自身を除く): 5211227

約数列:

[1, 7, 13, 41, 91, 287, 533, 3731, 5351, 37457, 69563, 219391, 486941, 1535737, 2852083, 19964581]

約数ペア:

[(1, 19964581), (7, 2852083), (13, 1535737), (41, 486941), (91, 219391), (287, 69563), (533, 37457), (3731, 5351)]