19761291

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{137}}^1$

素因数の和:232

約数の個数: 48

約数和(自身を含む): 33067008

約数和(自身を除く): 13305717

約数列:

[1, 3, 9, 11, 31, 33, 47, 93, 99, 137, 141, 279, 341, 411, 423, 517, 1023, 1233, 1457, 1507, 1551, 3069, 4247, 4371, 4521, 4653, 6439, 12741, 13113, 13563, 16027, 19317, 38223, 46717, 48081, 57951, 70829, 140151, 144243, 199609, 212487, 420453, 598827, 637461, 1796481, 2195699, 6587097, 19761291]

約数ペア:

[(1, 19761291), (3, 6587097), (9, 2195699), (11, 1796481), (31, 637461), (33, 598827), (47, 420453), (93, 212487), (99, 199609), (137, 144243), (141, 140151), (279, 70829), (341, 57951), (411, 48081), (423, 46717), (517, 38223), (1023, 19317), (1233, 16027), (1457, 13563), (1507, 13113), (1551, 12741), (3069, 6439), (4247, 4653), (4371, 4521)]