256439905

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{211}}^1\times {\mathrm{7841}}^1$

素因数の和:8088

約数の個数: 16

約数和(自身を含む): 319200768

約数和(自身を除く): 62760863

約数列:

[1, 5, 31, 155, 211, 1055, 6541, 7841, 32705, 39205, 243071, 1215355, 1654451, 8272255, 51287981, 256439905]

約数ペア:

[(1, 256439905), (5, 51287981), (31, 8272255), (155, 1654451), (211, 1215355), (1055, 243071), (6541, 39205), (7841, 32705)]