20154725

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{281}}^1$

素因数の和:461

約数の個数: 24

約数和(自身を含む): 26575680

約数和(自身を除く): 6420955

約数列:

[1, 5, 19, 25, 95, 151, 281, 475, 755, 1405, 2869, 3775, 5339, 7025, 14345, 26695, 42431, 71725, 133475, 212155, 806189, 1060775, 4030945, 20154725]

約数ペア:

[(1, 20154725), (5, 4030945), (19, 1060775), (25, 806189), (95, 212155), (151, 133475), (281, 71725), (475, 42431), (755, 26695), (1405, 14345), (2869, 7025), (3775, 5339)]