20509437

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1\times {\mathrm{167}}^1$

素因数の和:297

約数の個数: 32

約数和(自身を含む): 30707712

約数和(自身を除く): 10198275

約数列:

[1, 3, 13, 39, 47, 67, 141, 167, 201, 501, 611, 871, 1833, 2171, 2613, 3149, 6513, 7849, 9447, 11189, 23547, 33567, 40937, 102037, 122811, 145457, 306111, 436371, 525883, 1577649, 6836479, 20509437]

約数ペア:

[(1, 20509437), (3, 6836479), (13, 1577649), (39, 525883), (47, 436371), (67, 306111), (141, 145457), (167, 122811), (201, 102037), (501, 40937), (611, 33567), (871, 23547), (1833, 11189), (2171, 9447), (2613, 7849), (3149, 6513)]