678808840

素因数分解:

$2^3\times 5^1\times {\mathrm{16970221}}^1$

素因数の和:16970232

約数の個数: 16

約数和(自身を含む): 1527319980

約数和(自身を除く): 848511140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 16970221, 33940442, 67880884, 84851105, 135761768, 169702210, 339404420, 678808840]

約数ペア:

[(1, 678808840), (2, 339404420), (4, 169702210), (5, 135761768), (8, 84851105), (10, 67880884), (20, 33940442), (40, 16970221)]