20958916

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{6709}}^1$

素因数の和:6795

約数の個数: 24

約数和(自身を含む): 40582080

約数和(自身を除く): 19623164

約数列:

[1, 2, 4, 11, 22, 44, 71, 142, 284, 781, 1562, 3124, 6709, 13418, 26836, 73799, 147598, 295196, 476339, 952678, 1905356, 5239729, 10479458, 20958916]

約数ペア:

[(1, 20958916), (2, 10479458), (4, 5239729), (11, 1905356), (22, 952678), (44, 476339), (71, 295196), (142, 147598), (284, 73799), (781, 26836), (1562, 13418), (3124, 6709)]