212840740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1520291}}^1$

素因数の和:1520307

約数の個数: 24

約数和(自身を含む): 510818112

約数和(自身を除く): 297977372

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1520291, 3040582, 6081164, 7601455, 10642037, 15202910, 21284074, 30405820, 42568148, 53210185, 106420370, 212840740]

約数ペア:

[(1, 212840740), (2, 106420370), (4, 53210185), (5, 42568148), (7, 30405820), (10, 21284074), (14, 15202910), (20, 10642037), (28, 7601455), (35, 6081164), (70, 3040582), (140, 1520291)]