21439803

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13259}}^1$

素因数の和:13287

約数の個数: 24

約数和(自身を含む): 36279360

約数和(自身を除く): 14839557

約数列:

[1, 3, 7, 11, 21, 33, 49, 77, 147, 231, 539, 1617, 13259, 39777, 92813, 145849, 278439, 437547, 649691, 1020943, 1949073, 3062829, 7146601, 21439803]

約数ペア:

[(1, 21439803), (3, 7146601), (7, 3062829), (11, 1949073), (21, 1020943), (33, 649691), (49, 437547), (77, 278439), (147, 145849), (231, 92813), (539, 39777), (1617, 13259)]