21708752

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{104369}}^1$

素因数の和:104390

約数の個数: 20

約数和(自身を含む): 45296580

約数和(自身を除く): 23587828

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 104369, 208738, 417476, 834952, 1356797, 1669904, 2713594, 5427188, 10854376, 21708752]

約数ペア:

[(1, 21708752), (2, 10854376), (4, 5427188), (8, 2713594), (13, 1669904), (16, 1356797), (26, 834952), (52, 417476), (104, 208738), (208, 104369)]