21657647

素因数分解:

${\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{163}}^1\times {\mathrm{257}}^1$

素因数の和:478

約数の個数: 16

約数和(自身を含む): 24371712

約数和(自身を除く): 2714065

約数列:

[1, 11, 47, 163, 257, 517, 1793, 2827, 7661, 12079, 41891, 84271, 132869, 460801, 1968877, 21657647]

約数ペア:

[(1, 21657647), (11, 1968877), (47, 460801), (163, 132869), (257, 84271), (517, 41891), (1793, 12079), (2827, 7661)]