20380888

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{31}}^2\times {\mathrm{241}}^1$

素因数の和:320

約数の個数: 48

約数和(自身を含む): 43255080

約数和(自身を除く): 22874192

約数列:

[1, 2, 4, 8, 11, 22, 31, 44, 62, 88, 124, 241, 248, 341, 482, 682, 961, 964, 1364, 1922, 1928, 2651, 2728, 3844, 5302, 7471, 7688, 10571, 10604, 14942, 21142, 21208, 29884, 42284, 59768, 82181, 84568, 164362, 231601, 328724, 463202, 657448, 926404, 1852808, 2547611, 5095222, 10190444, 20380888]

約数ペア:

[(1, 20380888), (2, 10190444), (4, 5095222), (8, 2547611), (11, 1852808), (22, 926404), (31, 657448), (44, 463202), (62, 328724), (88, 231601), (124, 164362), (241, 84568), (248, 82181), (341, 59768), (482, 42284), (682, 29884), (961, 21208), (964, 21142), (1364, 14942), (1922, 10604), (1928, 10571), (2651, 7688), (2728, 7471), (3844, 5302)]