19879153

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{569}}^1$

素因数の和:637

約数の個数: 24

約数和(自身を含む): 24952320

約数和(自身を除く): 5073167

約数列:

[1, 7, 23, 31, 49, 161, 217, 569, 713, 1127, 1519, 3983, 4991, 13087, 17639, 27881, 34937, 91609, 123473, 405697, 641263, 864311, 2839879, 19879153]

約数ペア:

[(1, 19879153), (7, 2839879), (23, 864311), (31, 641263), (49, 405697), (161, 123473), (217, 91609), (569, 34937), (713, 27881), (1127, 17639), (1519, 13087), (3983, 4991)]