20303998

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{127}}^1$

素因数の和:209

約数の個数: 48

約数和(自身を含む): 37103616

約数和(自身を除く): 16799618

約数列:

[1, 2, 11, 13, 22, 26, 43, 86, 127, 143, 169, 254, 286, 338, 473, 559, 946, 1118, 1397, 1651, 1859, 2794, 3302, 3718, 5461, 6149, 7267, 10922, 12298, 14534, 18161, 21463, 36322, 42926, 60071, 70993, 79937, 120142, 141986, 159874, 236093, 472186, 780923, 922909, 1561846, 1845818, 10151999, 20303998]

約数ペア:

[(1, 20303998), (2, 10151999), (11, 1845818), (13, 1561846), (22, 922909), (26, 780923), (43, 472186), (86, 236093), (127, 159874), (143, 141986), (169, 120142), (254, 79937), (286, 70993), (338, 60071), (473, 42926), (559, 36322), (946, 21463), (1118, 18161), (1397, 14534), (1651, 12298), (1859, 10922), (2794, 7267), (3302, 6149), (3718, 5461)]