20308169

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1$

素因数の和:189

約数の個数: 32

約数和(自身を含む): 25850880

約数和(自身を除く): 5542711

約数列:

[1, 7, 19, 43, 53, 67, 133, 301, 371, 469, 817, 1007, 1273, 2279, 2881, 3551, 5719, 7049, 8911, 15953, 20167, 24857, 43301, 54739, 67469, 152693, 303107, 383173, 472283, 1068851, 2901167, 20308169]

約数ペア:

[(1, 20308169), (7, 2901167), (19, 1068851), (43, 472283), (53, 383173), (67, 303107), (133, 152693), (301, 67469), (371, 54739), (469, 43301), (817, 24857), (1007, 20167), (1273, 15953), (2279, 8911), (2881, 7049), (3551, 5719)]