20943945

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1459}}^1$

素因数の和:1510

約数の個数: 48

約数和(自身を含む): 40996800

約数和(自身を除く): 20052855

約数列:

[1, 3, 5, 9, 11, 15, 29, 33, 45, 55, 87, 99, 145, 165, 261, 319, 435, 495, 957, 1305, 1459, 1595, 2871, 4377, 4785, 7295, 13131, 14355, 16049, 21885, 42311, 48147, 65655, 80245, 126933, 144441, 211555, 240735, 380799, 465421, 634665, 722205, 1396263, 1903995, 2327105, 4188789, 6981315, 20943945]

約数ペア:

[(1, 20943945), (3, 6981315), (5, 4188789), (9, 2327105), (11, 1903995), (15, 1396263), (29, 722205), (33, 634665), (45, 465421), (55, 380799), (87, 240735), (99, 211555), (145, 144441), (165, 126933), (261, 80245), (319, 65655), (435, 48147), (495, 42311), (957, 21885), (1305, 16049), (1459, 14355), (1595, 13131), (2871, 7295), (4377, 4785)]