80784920

素因数分解:

$2^3\times 5^1\times {\mathrm{2019623}}^1$

素因数の和:2019634

約数の個数: 16

約数和(自身を含む): 181766160

約数和(自身を除く): 100981240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2019623, 4039246, 8078492, 10098115, 16156984, 20196230, 40392460, 80784920]

約数ペア:

[(1, 80784920), (2, 40392460), (4, 20196230), (5, 16156984), (8, 10098115), (10, 8078492), (20, 4039246), (40, 2019623)]