161439265

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{149}}^1\times {\mathrm{211}}^1$

素因数の和:457

約数の個数: 32

約数和(自身を含む): 213696000

約数和(自身を除く): 52256735

約数列:

[1, 5, 13, 65, 79, 149, 211, 395, 745, 1027, 1055, 1937, 2743, 5135, 9685, 11771, 13715, 16669, 31439, 58855, 83345, 153023, 157195, 216697, 408707, 765115, 1083485, 2043535, 2483681, 12418405, 32287853, 161439265]

約数ペア:

[(1, 161439265), (5, 32287853), (13, 12418405), (65, 2483681), (79, 2043535), (149, 1083485), (211, 765115), (395, 408707), (745, 216697), (1027, 157195), (1055, 153023), (1937, 83345), (2743, 58855), (5135, 31439), (9685, 16669), (11771, 13715)]