18970938

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{137}}^1\times {\mathrm{157}}^1$

素因数の和:316

約数の個数: 72

約数和(自身を含む): 48470292

約数和(自身を除く): 29499354

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 49, 63, 98, 126, 137, 147, 157, 274, 294, 314, 411, 441, 471, 822, 882, 942, 959, 1099, 1233, 1413, 1918, 2198, 2466, 2826, 2877, 3297, 5754, 6594, 6713, 7693, 8631, 9891, 13426, 15386, 17262, 19782, 20139, 21509, 23079, 40278, 43018, 46158, 60417, 64527, 69237, 120834, 129054, 138474, 150563, 193581, 301126, 387162, 451689, 903378, 1053941, 1355067, 2107882, 2710134, 3161823, 6323646, 9485469, 18970938]

約数ペア:

[(1, 18970938), (2, 9485469), (3, 6323646), (6, 3161823), (7, 2710134), (9, 2107882), (14, 1355067), (18, 1053941), (21, 903378), (42, 451689), (49, 387162), (63, 301126), (98, 193581), (126, 150563), (137, 138474), (147, 129054), (157, 120834), (274, 69237), (294, 64527), (314, 60417), (411, 46158), (441, 43018), (471, 40278), (822, 23079), (882, 21509), (942, 20139), (959, 19782), (1099, 17262), (1233, 15386), (1413, 13426), (1918, 9891), (2198, 8631), (2466, 7693), (2826, 6713), (2877, 6594), (3297, 5754)]