20338472

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{241}}^1$

素因数の和:402

約数の個数: 64

約数和(自身を含む): 48090240

約数和(自身を除く): 27751768

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 88, 137, 154, 241, 274, 308, 482, 548, 616, 959, 964, 1096, 1507, 1687, 1918, 1928, 2651, 3014, 3374, 3836, 5302, 6028, 6748, 7672, 10549, 10604, 12056, 13496, 18557, 21098, 21208, 33017, 37114, 42196, 66034, 74228, 84392, 132068, 148456, 231119, 264136, 363187, 462238, 726374, 924476, 1452748, 1848952, 2542309, 2905496, 5084618, 10169236, 20338472]

約数ペア:

[(1, 20338472), (2, 10169236), (4, 5084618), (7, 2905496), (8, 2542309), (11, 1848952), (14, 1452748), (22, 924476), (28, 726374), (44, 462238), (56, 363187), (77, 264136), (88, 231119), (137, 148456), (154, 132068), (241, 84392), (274, 74228), (308, 66034), (482, 42196), (548, 37114), (616, 33017), (959, 21208), (964, 21098), (1096, 18557), (1507, 13496), (1687, 12056), (1918, 10604), (1928, 10549), (2651, 7672), (3014, 6748), (3374, 6028), (3836, 5302)]