21191583

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{233}}^1$

素因数の和:375

約数の個数: 32

約数和(自身を含む): 33426432

約数和(自身を除く): 12234849

約数列:

[1, 3, 7, 21, 61, 71, 183, 213, 233, 427, 497, 699, 1281, 1491, 1631, 4331, 4893, 12993, 14213, 16543, 30317, 42639, 49629, 90951, 99491, 115801, 298473, 347403, 1009123, 3027369, 7063861, 21191583]

約数ペア:

[(1, 21191583), (3, 7063861), (7, 3027369), (21, 1009123), (61, 347403), (71, 298473), (183, 115801), (213, 99491), (233, 90951), (427, 49629), (497, 42639), (699, 30317), (1281, 16543), (1491, 14213), (1631, 12993), (4331, 4893)]