20121261291

素因数分解:

$3^2\times {\mathrm{431}}^1\times {\mathrm{1061}}^1\times {\mathrm{4889}}^1$

素因数の和:6387

約数の個数: 24

約数和(自身を含む): 29164898880

約数和(自身を除く): 9043637589

約数列:

[1, 3, 9, 431, 1061, 1293, 3183, 3879, 4889, 9549, 14667, 44001, 457291, 1371873, 2107159, 4115619, 5187229, 6321477, 15561687, 18964431, 46685061, 2235695699, 6707087097, 20121261291]

約数ペア:

[(1, 20121261291), (3, 6707087097), (9, 2235695699), (431, 46685061), (1061, 18964431), (1293, 15561687), (3183, 6321477), (3879, 5187229), (4889, 4115619), (9549, 2107159), (14667, 1371873), (44001, 457291)]