216405140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1545751}}^1$

素因数の和:1545767

約数の個数: 24

約数和(自身を含む): 519372672

約数和(自身を除く): 302967532

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1545751, 3091502, 6183004, 7728755, 10820257, 15457510, 21640514, 30915020, 43281028, 54101285, 108202570, 216405140]

約数ペア:

[(1, 216405140), (2, 108202570), (4, 54101285), (5, 43281028), (7, 30915020), (10, 21640514), (14, 15457510), (20, 10820257), (28, 7728755), (35, 6183004), (70, 3091502), (140, 1545751)]