20802991

素因数分解:

${\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{647}}^1$

素因数の和:774

約数の個数: 16

約数和(自身を含む): 23639040

約数和(自身を除く): 2836049

約数列:

[1, 11, 37, 79, 407, 647, 869, 2923, 7117, 23939, 32153, 51113, 263329, 562243, 1891181, 20802991]

約数ペア:

[(1, 20802991), (11, 1891181), (37, 562243), (79, 263329), (407, 51113), (647, 32153), (869, 23939), (2923, 7117)]