19803021

素因数分解:

$3^1\times 7^1\times {\mathrm{557}}^1\times {\mathrm{1693}}^1$

素因数の和:2260

約数の個数: 16

約数和(自身を含む): 30248064

約数和(自身を除く): 10445043

約数列:

[1, 3, 7, 21, 557, 1671, 1693, 3899, 5079, 11697, 11851, 35553, 943001, 2829003, 6601007, 19803021]

約数ペア:

[(1, 19803021), (3, 6601007), (7, 2829003), (21, 943001), (557, 35553), (1671, 11851), (1693, 11697), (3899, 5079)]