19947939

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{179}}^1\times {\mathrm{307}}^1$

素因数の和:511

約数の個数: 24

約数和(自身を含む): 29494080

約数和(自身を除く): 9546141

約数列:

[1, 3, 11, 33, 121, 179, 307, 363, 537, 921, 1969, 3377, 5907, 10131, 21659, 37147, 54953, 64977, 111441, 164859, 604483, 1813449, 6649313, 19947939]

約数ペア:

[(1, 19947939), (3, 6649313), (11, 1813449), (33, 604483), (121, 164859), (179, 111441), (307, 64977), (363, 54953), (537, 37147), (921, 21659), (1969, 10131), (3377, 5907)]