20739004

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{2789}}^1$

素因数の和:2830

約数の個数: 36

約数和(自身を含む): 42887880

約数和(自身を除く): 22148876

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 143, 169, 286, 338, 572, 676, 1859, 2789, 3718, 5578, 7436, 11156, 30679, 36257, 61358, 72514, 122716, 145028, 398827, 471341, 797654, 942682, 1595308, 1885364, 5184751, 10369502, 20739004]

約数ペア:

[(1, 20739004), (2, 10369502), (4, 5184751), (11, 1885364), (13, 1595308), (22, 942682), (26, 797654), (44, 471341), (52, 398827), (143, 145028), (169, 122716), (286, 72514), (338, 61358), (572, 36257), (676, 30679), (1859, 11156), (2789, 7436), (3718, 5578)]