21294380

素因数分解:

$2^2\times 5^1\times {\mathrm{743}}^1\times {\mathrm{1433}}^1$

素因数の和:2185

約数の個数: 24

約数和(自身を含む): 44809632

約数和(自身を除く): 23515252

約数列:

[1, 2, 4, 5, 10, 20, 743, 1433, 1486, 2866, 2972, 3715, 5732, 7165, 7430, 14330, 14860, 28660, 1064719, 2129438, 4258876, 5323595, 10647190, 21294380]

約数ペア:

[(1, 21294380), (2, 10647190), (4, 5323595), (5, 4258876), (10, 2129438), (20, 1064719), (743, 28660), (1433, 14860), (1486, 14330), (2866, 7430), (2972, 7165), (3715, 5732)]