20956143

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{4231}}^1$

素因数の和:4374

約数の個数: 16

約数和(自身を含む): 30334976

約数和(自身を除く): 9378833

約数列:

[1, 3, 13, 39, 127, 381, 1651, 4231, 4953, 12693, 55003, 165009, 537337, 1612011, 6985381, 20956143]

約数ペア:

[(1, 20956143), (3, 6985381), (13, 1612011), (39, 537337), (127, 165009), (381, 55003), (1651, 12693), (4231, 4953)]