209454987

素因数分解:

$3^1\times 7^1\times {\mathrm{193}}^1\times {\mathrm{51679}}^1$

素因数の和:51882

約数の個数: 16

約数和(自身を含む): 320829440

約数和(自身を除く): 111374453

約数列:

[1, 3, 7, 21, 193, 579, 1351, 4053, 51679, 155037, 361753, 1085259, 9974047, 29922141, 69818329, 209454987]

約数ペア:

[(1, 209454987), (3, 69818329), (7, 29922141), (21, 9974047), (193, 1085259), (579, 361753), (1351, 155037), (4053, 51679)]