21072396

素因数分解:

$2^2\times 3^1\times {\mathrm{643}}^1\times {\mathrm{2731}}^1$

素因数の和:3381

約数の個数: 24

約数和(自身を含む): 49263424

約数和(自身を除く): 28191028

約数列:

[1, 2, 3, 4, 6, 12, 643, 1286, 1929, 2572, 2731, 3858, 5462, 7716, 8193, 10924, 16386, 32772, 1756033, 3512066, 5268099, 7024132, 10536198, 21072396]

約数ペア:

[(1, 21072396), (2, 10536198), (3, 7024132), (4, 5268099), (6, 3512066), (12, 1756033), (643, 32772), (1286, 16386), (1929, 10924), (2572, 8193), (2731, 7716), (3858, 5462)]