19617220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{140123}}^1$

素因数の和:140139

約数の個数: 24

約数和(自身を含む): 47081664

約数和(自身を除く): 27464444

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 140123, 280246, 560492, 700615, 980861, 1401230, 1961722, 2802460, 3923444, 4904305, 9808610, 19617220]

約数ペア:

[(1, 19617220), (2, 9808610), (4, 4904305), (5, 3923444), (7, 2802460), (10, 1961722), (14, 1401230), (20, 980861), (28, 700615), (35, 560492), (70, 280246), (140, 140123)]