201555921

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{223207}}^1$

素因数の和:223260

約数の個数: 16

約数和(自身を含む): 314276864

約数和(自身を除く): 112720943

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 223207, 669621, 1562449, 4687347, 9597901, 28793703, 67185307, 201555921]

約数ペア:

[(1, 201555921), (3, 67185307), (7, 28793703), (21, 9597901), (43, 4687347), (129, 1562449), (301, 669621), (903, 223207)]