128871920

素因数分解:

$2^4\times 5^1\times {\mathrm{1610899}}^1$

素因数の和:1610912

約数の個数: 20

約数和(自身を含む): 299627400

約数和(自身を除く): 170755480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1610899, 3221798, 6443596, 8054495, 12887192, 16108990, 25774384, 32217980, 64435960, 128871920]

約数ペア:

[(1, 128871920), (2, 64435960), (4, 32217980), (5, 25774384), (8, 16108990), (10, 12887192), (16, 8054495), (20, 6443596), (40, 3221798), (80, 1610899)]