290987907

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{729293}}^1$

素因数の和:729322

約数の個数: 16

約数和(自身を含む): 466748160

約数和(自身を除く): 175760253

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 729293, 2187879, 5105051, 13856567, 15315153, 41569701, 96995969, 290987907]

約数ペア:

[(1, 290987907), (3, 96995969), (7, 41569701), (19, 15315153), (21, 13856567), (57, 5105051), (133, 2187879), (399, 729293)]