13780221

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{7211}}^1$

素因数の和:7241

約数の個数: 24

約数和(自身を含む): 23020704

約数和(自身を除く): 9240483

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 7211, 21633, 50477, 93743, 151431, 281229, 353339, 656201, 1060017, 1968603, 4593407, 13780221]

約数ペア:

[(1, 13780221), (3, 4593407), (7, 1968603), (13, 1060017), (21, 656201), (39, 353339), (49, 281229), (91, 151431), (147, 93743), (273, 50477), (637, 21633), (1911, 7211)]