31316978

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{139}}^1$

素因数の和:196

約数の個数: 72

約数和(自身を含む): 63680400

約数和(自身を除く): 32363422

約数列:

[1, 2, 7, 11, 14, 19, 22, 38, 49, 77, 98, 121, 133, 139, 154, 209, 242, 266, 278, 418, 539, 847, 931, 973, 1078, 1463, 1529, 1694, 1862, 1946, 2299, 2641, 2926, 3058, 4598, 5282, 5929, 6811, 10241, 10703, 11858, 13622, 16093, 16819, 18487, 20482, 21406, 29051, 32186, 33638, 36974, 58102, 74921, 112651, 117733, 129409, 149842, 203357, 225302, 235466, 258818, 319561, 406714, 639122, 824131, 1423499, 1648262, 2236927, 2846998, 4473854, 15658489, 31316978]

約数ペア:

[(1, 31316978), (2, 15658489), (7, 4473854), (11, 2846998), (14, 2236927), (19, 1648262), (22, 1423499), (38, 824131), (49, 639122), (77, 406714), (98, 319561), (121, 258818), (133, 235466), (139, 225302), (154, 203357), (209, 149842), (242, 129409), (266, 117733), (278, 112651), (418, 74921), (539, 58102), (847, 36974), (931, 33638), (973, 32186), (1078, 29051), (1463, 21406), (1529, 20482), (1694, 18487), (1862, 16819), (1946, 16093), (2299, 13622), (2641, 11858), (2926, 10703), (3058, 10241), (4598, 6811), (5282, 5929)]