21494871

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{337}}^1\times {\mathrm{373}}^1$

素因数の和:735

約数の個数: 24

約数和(自身を含む): 32867120

約数和(自身を除く): 11372249

約数列:

[1, 3, 9, 19, 57, 171, 337, 373, 1011, 1119, 3033, 3357, 6403, 7087, 19209, 21261, 57627, 63783, 125701, 377103, 1131309, 2388319, 7164957, 21494871]

約数ペア:

[(1, 21494871), (3, 7164957), (9, 2388319), (19, 1131309), (57, 377103), (171, 125701), (337, 63783), (373, 57627), (1011, 21261), (1119, 19209), (3033, 7087), (3357, 6403)]