21018442

素因数分解:

$2^1\times {\mathrm{37}}^1\times {\mathrm{439}}^1\times {\mathrm{647}}^1$

素因数の和:1125

約数の個数: 16

約数和(自身を含む): 32503680

約数和(自身を除く): 11485238

約数列:

[1, 2, 37, 74, 439, 647, 878, 1294, 16243, 23939, 32486, 47878, 284033, 568066, 10509221, 21018442]

約数ペア:

[(1, 21018442), (2, 10509221), (37, 568066), (74, 284033), (439, 47878), (647, 32486), (878, 23939), (1294, 16243)]