1987645

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{509}}^1$

素因数の和:596

約数の個数: 16

約数和(自身を含む): 2643840

約数和(自身を除く): 656195

約数列:

[1, 5, 11, 55, 71, 355, 509, 781, 2545, 3905, 5599, 27995, 36139, 180695, 397529, 1987645]

約数ペア:

[(1, 1987645), (5, 397529), (11, 180695), (55, 36139), (71, 27995), (355, 5599), (509, 3905), (781, 2545)]