29720980

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{10691}}^1$

素因数の和:10839

約数の個数: 24

約数和(自身を含む): 62868960

約数和(自身を除く): 33147980

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 10691, 21382, 42764, 53455, 106910, 213820, 1486049, 2972098, 5944196, 7430245, 14860490, 29720980]

約数ペア:

[(1, 29720980), (2, 14860490), (4, 7430245), (5, 5944196), (10, 2972098), (20, 1486049), (139, 213820), (278, 106910), (556, 53455), (695, 42764), (1390, 21382), (2780, 10691)]