21671860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{154799}}^1$

素因数の和:154815

約数の個数: 24

約数和(自身を含む): 52012800

約数和(自身を除く): 30340940

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 154799, 309598, 619196, 773995, 1083593, 1547990, 2167186, 3095980, 4334372, 5417965, 10835930, 21671860]

約数ペア:

[(1, 21671860), (2, 10835930), (4, 5417965), (5, 4334372), (7, 3095980), (10, 2167186), (14, 1547990), (20, 1083593), (28, 773995), (35, 619196), (70, 309598), (140, 154799)]