20128885

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{30269}}^1$

素因数の和:30300

約数の個数: 16

約数和(自身を含む): 29059200

約数和(自身を除く): 8930315

約数列:

[1, 5, 7, 19, 35, 95, 133, 665, 30269, 151345, 211883, 575111, 1059415, 2875555, 4025777, 20128885]

約数ペア:

[(1, 20128885), (5, 4025777), (7, 2875555), (19, 1059415), (35, 575111), (95, 211883), (133, 151345), (665, 30269)]