20881458

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{89237}}^1$

素因数の和:89258

約数の個数: 24

約数和(自身を含む): 48723948

約数和(自身を除く): 27842490

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 234, 89237, 178474, 267711, 535422, 803133, 1160081, 1606266, 2320162, 3480243, 6960486, 10440729, 20881458]

約数ペア:

[(1, 20881458), (2, 10440729), (3, 6960486), (6, 3480243), (9, 2320162), (13, 1606266), (18, 1160081), (26, 803133), (39, 535422), (78, 267711), (117, 178474), (234, 89237)]