990555813

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{1321}}^1$

素因数の和:1399

約数の個数: 72

約数和(自身を含む): 1698320520

約数和(自身を除く): 707764707

約数列:

[1, 3, 9, 13, 17, 29, 39, 51, 87, 117, 153, 169, 221, 261, 377, 493, 507, 663, 1131, 1321, 1479, 1521, 1989, 2873, 3393, 3963, 4437, 4901, 6409, 8619, 11889, 14703, 17173, 19227, 22457, 25857, 38309, 44109, 51519, 57681, 67371, 83317, 114927, 154557, 202113, 223249, 249951, 291941, 344781, 498017, 651253, 669747, 749853, 875823, 1494051, 1953759, 2009241, 2627469, 3795233, 4482153, 5861277, 6474221, 8466289, 11385699, 19422663, 25398867, 34157097, 58267989, 76196601, 110061757, 330185271, 990555813]

約数ペア:

[(1, 990555813), (3, 330185271), (9, 110061757), (13, 76196601), (17, 58267989), (29, 34157097), (39, 25398867), (51, 19422663), (87, 11385699), (117, 8466289), (153, 6474221), (169, 5861277), (221, 4482153), (261, 3795233), (377, 2627469), (493, 2009241), (507, 1953759), (663, 1494051), (1131, 875823), (1321, 749853), (1479, 669747), (1521, 651253), (1989, 498017), (2873, 344781), (3393, 291941), (3963, 249951), (4437, 223249), (4901, 202113), (6409, 154557), (8619, 114927), (11889, 83317), (14703, 67371), (17173, 57681), (19227, 51519), (22457, 44109), (25857, 38309)]