21186495

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{1297}}^1$

素因数の和:1333

約数の個数: 48

約数和(自身を含む): 41432160

約数和(自身を除く): 20245665

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 99, 121, 135, 165, 297, 363, 495, 605, 1089, 1297, 1485, 1815, 3267, 3891, 5445, 6485, 11673, 14267, 16335, 19455, 35019, 42801, 58365, 71335, 128403, 156937, 175095, 214005, 385209, 470811, 642015, 784685, 1412433, 1926045, 2354055, 4237299, 7062165, 21186495]

約数ペア:

[(1, 21186495), (3, 7062165), (5, 4237299), (9, 2354055), (11, 1926045), (15, 1412433), (27, 784685), (33, 642015), (45, 470811), (55, 385209), (99, 214005), (121, 175095), (135, 156937), (165, 128403), (297, 71335), (363, 58365), (495, 42801), (605, 35019), (1089, 19455), (1297, 16335), (1485, 14267), (1815, 11673), (3267, 6485), (3891, 5445)]