81321513

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{297881}}^1$

素因数の和:297904

約数の個数: 16

約数和(自身を含む): 133451136

約数和(自身を除く): 52129623

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 297881, 893643, 2085167, 3872453, 6255501, 11617359, 27107171, 81321513]

約数ペア:

[(1, 81321513), (3, 27107171), (7, 11617359), (13, 6255501), (21, 3872453), (39, 2085167), (91, 893643), (273, 297881)]