16811020

素因数分解:

$2^2\times 5^1\times {\mathrm{809}}^1\times {\mathrm{1039}}^1$

素因数の和:1857

約数の個数: 24

約数和(自身を含む): 35380800

約数和(自身を除く): 18569780

約数列:

[1, 2, 4, 5, 10, 20, 809, 1039, 1618, 2078, 3236, 4045, 4156, 5195, 8090, 10390, 16180, 20780, 840551, 1681102, 3362204, 4202755, 8405510, 16811020]

約数ペア:

[(1, 16811020), (2, 8405510), (4, 4202755), (5, 3362204), (10, 1681102), (20, 840551), (809, 20780), (1039, 16180), (1618, 10390), (2078, 8090), (3236, 5195), (4045, 4156)]