20129121859

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{43}}^2\times {\mathrm{12853}}^1$

素因数の和:12968

約数の個数: 36

約数和(自身を含む): 25889909808

約数和(自身を除く): 5760787949

約数列:

[1, 7, 11, 43, 77, 121, 301, 473, 847, 1849, 3311, 5203, 12853, 12943, 20339, 36421, 89971, 141383, 142373, 223729, 552679, 989681, 1555213, 1566103, 3868753, 6079469, 10886491, 23765197, 42556283, 66874159, 166356379, 261417167, 468119113, 1829920169, 2875588837, 20129121859]

約数ペア:

[(1, 20129121859), (7, 2875588837), (11, 1829920169), (43, 468119113), (77, 261417167), (121, 166356379), (301, 66874159), (473, 42556283), (847, 23765197), (1849, 10886491), (3311, 6079469), (5203, 3868753), (12853, 1566103), (12943, 1555213), (20339, 989681), (36421, 552679), (89971, 223729), (141383, 142373)]