19939875

素因数分解:

$3^1\times 5^3\times {\mathrm{53173}}^1$

素因数の和:53191

約数の個数: 16

約数和(自身を含む): 33180576

約数和(自身を除く): 13240701

約数列:

[1, 3, 5, 15, 25, 75, 125, 375, 53173, 159519, 265865, 797595, 1329325, 3987975, 6646625, 19939875]

約数ペア:

[(1, 19939875), (3, 6646625), (5, 3987975), (15, 1329325), (25, 797595), (75, 265865), (125, 159519), (375, 53173)]