20217380157

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{491}}^1\times {\mathrm{351931}}^1$

素因数の和:352441

約数の個数: 24

約数和(自身を含む): 31513399008

約数和(自身を除く): 11296018851

約数列:

[1, 3, 9, 13, 39, 117, 491, 1473, 4419, 6383, 19149, 57447, 351931, 1055793, 3167379, 4575103, 13725309, 41175927, 172798121, 518394363, 1555183089, 2246375573, 6739126719, 20217380157]

約数ペア:

[(1, 20217380157), (3, 6739126719), (9, 2246375573), (13, 1555183089), (39, 518394363), (117, 172798121), (491, 41175927), (1473, 13725309), (4419, 4575103), (6383, 3167379), (19149, 1055793), (57447, 351931)]