1311387640

素因数分解:

$2^3\times 5^1\times {\mathrm{32784691}}^1$

素因数の和:32784702

約数の個数: 16

約数和(自身を含む): 2950622280

約数和(自身を除く): 1639234640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 32784691, 65569382, 131138764, 163923455, 262277528, 327846910, 655693820, 1311387640]

約数ペア:

[(1, 1311387640), (2, 655693820), (4, 327846910), (5, 262277528), (8, 163923455), (10, 131138764), (20, 65569382), (40, 32784691)]