405790021

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{283}}^1\times {\mathrm{2251}}^1$

素因数の和:2561

約数の個数: 24

約数和(自身を含む): 510375264

約数和(自身を除く): 104585243

約数列:

[1, 7, 13, 49, 91, 283, 637, 1981, 2251, 3679, 13867, 15757, 25753, 29263, 110299, 180271, 204841, 637033, 1433887, 4459231, 8281429, 31214617, 57970003, 405790021]

約数ペア:

[(1, 405790021), (7, 57970003), (13, 31214617), (49, 8281429), (91, 4459231), (283, 1433887), (637, 637033), (1981, 204841), (2251, 180271), (3679, 110299), (13867, 29263), (15757, 25753)]