13428725

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1663}}^1$

素因数の和:1709

約数の個数: 24

約数和(自身を含む): 18570240

約数和(自身を除く): 5141515

約数列:

[1, 5, 17, 19, 25, 85, 95, 323, 425, 475, 1615, 1663, 8075, 8315, 28271, 31597, 41575, 141355, 157985, 537149, 706775, 789925, 2685745, 13428725]

約数ペア:

[(1, 13428725), (5, 2685745), (17, 789925), (19, 706775), (25, 537149), (85, 157985), (95, 141355), (323, 41575), (425, 31597), (475, 28271), (1615, 8315), (1663, 8075)]