256578321

素因数分解:

$3^1\times {\mathrm{211}}^1\times {\mathrm{397}}^1\times {\mathrm{1021}}^1$

素因数の和:1632

約数の個数: 16

約数和(自身を含む): 344929088

約数和(自身を除く): 88350767

約数列:

[1, 3, 211, 397, 633, 1021, 1191, 3063, 83767, 215431, 251301, 405337, 646293, 1216011, 85526107, 256578321]

約数ペア:

[(1, 256578321), (3, 85526107), (211, 1216011), (397, 646293), (633, 405337), (1021, 251301), (1191, 215431), (3063, 83767)]