257911213

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{263}}^1\times {\mathrm{6091}}^1$

素因数の和:6384

約数の個数: 16

約数和(自身を含む): 308791296

約数和(自身を除く): 50880083

約数列:

[1, 7, 23, 161, 263, 1841, 6049, 6091, 42343, 42637, 140093, 980651, 1601933, 11213531, 36844459, 257911213]

約数ペア:

[(1, 257911213), (7, 36844459), (23, 11213531), (161, 1601933), (263, 980651), (1841, 140093), (6049, 42637), (6091, 42343)]