21242361

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53239}}^1$

素因数の和:53268

約数の個数: 16

約数和(自身を含む): 34073600

約数和(自身を除く): 12831239

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 53239, 159717, 372673, 1011541, 1118019, 3034623, 7080787, 21242361]

約数ペア:

[(1, 21242361), (3, 7080787), (7, 3034623), (19, 1118019), (21, 1011541), (57, 372673), (133, 159717), (399, 53239)]