81857370

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{389797}}^1$

素因数の和:389814

約数の個数: 32

約数和(自身を含む): 224523648

約数和(自身を除く): 142666278

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 389797, 779594, 1169391, 1948985, 2338782, 2728579, 3897970, 5457158, 5846955, 8185737, 11693910, 13642895, 16371474, 27285790, 40928685, 81857370]

約数ペア:

[(1, 81857370), (2, 40928685), (3, 27285790), (5, 16371474), (6, 13642895), (7, 11693910), (10, 8185737), (14, 5846955), (15, 5457158), (21, 3897970), (30, 2728579), (35, 2338782), (42, 1948985), (70, 1169391), (105, 779594), (210, 389797)]