21237020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{151693}}^1$

素因数の和:151709

約数の個数: 24

約数和(自身を含む): 50969184

約数和(自身を除く): 29732164

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 151693, 303386, 606772, 758465, 1061851, 1516930, 2123702, 3033860, 4247404, 5309255, 10618510, 21237020]

約数ペア:

[(1, 21237020), (2, 10618510), (4, 5309255), (5, 4247404), (7, 3033860), (10, 2123702), (14, 1516930), (20, 1061851), (28, 758465), (35, 606772), (70, 303386), (140, 151693)]