21007623

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{10993}}^1$

素因数の和:11023

約数の個数: 24

約数和(自身を含む): 35092848

約数和(自身を除く): 14085225

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 10993, 32979, 76951, 142909, 230853, 428727, 538657, 1000363, 1615971, 3001089, 7002541, 21007623]

約数ペア:

[(1, 21007623), (3, 7002541), (7, 3001089), (13, 1615971), (21, 1000363), (39, 538657), (49, 428727), (91, 230853), (147, 142909), (273, 76951), (637, 32979), (1911, 10993)]