20085165

素因数分解:

$3^5\times 5^1\times {\mathrm{61}}^1\times {\mathrm{271}}^1$

素因数の和:352

約数の個数: 48

約数和(自身を含む): 36830976

約数和(自身を除く): 16745811

約数列:

[1, 3, 5, 9, 15, 27, 45, 61, 81, 135, 183, 243, 271, 305, 405, 549, 813, 915, 1215, 1355, 1647, 2439, 2745, 4065, 4941, 7317, 8235, 12195, 14823, 16531, 21951, 24705, 36585, 49593, 65853, 74115, 82655, 109755, 148779, 247965, 329265, 446337, 743895, 1339011, 2231685, 4017033, 6695055, 20085165]

約数ペア:

[(1, 20085165), (3, 6695055), (5, 4017033), (9, 2231685), (15, 1339011), (27, 743895), (45, 446337), (61, 329265), (81, 247965), (135, 148779), (183, 109755), (243, 82655), (271, 74115), (305, 65853), (405, 49593), (549, 36585), (813, 24705), (915, 21951), (1215, 16531), (1355, 14823), (1647, 12195), (2439, 8235), (2745, 7317), (4065, 4941)]