21172151

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{1627}}^1$

素因数の和:1671

約数の個数: 24

約数和(自身を含む): 28600704

約数和(自身を除く): 7428553

約数列:

[1, 7, 11, 13, 77, 91, 143, 169, 1001, 1183, 1627, 1859, 11389, 13013, 17897, 21151, 125279, 148057, 232661, 274963, 1628627, 1924741, 3024593, 21172151]

約数ペア:

[(1, 21172151), (7, 3024593), (11, 1924741), (13, 1628627), (77, 274963), (91, 232661), (143, 148057), (169, 125279), (1001, 21151), (1183, 17897), (1627, 13013), (1859, 11389)]