20956767

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{433}}^1$

素因数の和:539

約数の個数: 32

約数和(自身を含む): 32372928

約数和(自身を除く): 11416161

約数列:

[1, 3, 13, 17, 39, 51, 73, 219, 221, 433, 663, 949, 1241, 1299, 2847, 3723, 5629, 7361, 16133, 16887, 22083, 31609, 48399, 94827, 95693, 287079, 410917, 537353, 1232751, 1612059, 6985589, 20956767]

約数ペア:

[(1, 20956767), (3, 6985589), (13, 1612059), (17, 1232751), (39, 537353), (51, 410917), (73, 287079), (219, 95693), (221, 94827), (433, 48399), (663, 31609), (949, 22083), (1241, 16887), (1299, 16133), (2847, 7361), (3723, 5629)]