19659220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{140423}}^1$

素因数の和:140439

約数の個数: 24

約数和(自身を含む): 47182464

約数和(自身を除く): 27523244

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 140423, 280846, 561692, 702115, 982961, 1404230, 1965922, 2808460, 3931844, 4914805, 9829610, 19659220]

約数ペア:

[(1, 19659220), (2, 9829610), (4, 4914805), (5, 3931844), (7, 2808460), (10, 1965922), (14, 1404230), (20, 982961), (28, 702115), (35, 561692), (70, 280846), (140, 140423)]