21302781

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{337}}^1\times {\mathrm{1109}}^1$

素因数の和:1468

約数の個数: 16

約数和(自身を含む): 30014400

約数和(自身を除く): 8711619

約数列:

[1, 3, 19, 57, 337, 1011, 1109, 3327, 6403, 19209, 21071, 63213, 373733, 1121199, 7100927, 21302781]

約数ペア:

[(1, 21302781), (3, 7100927), (19, 1121199), (57, 373733), (337, 63213), (1011, 21071), (1109, 19209), (3327, 6403)]