678793040

素因数分解:

$2^4\times 5^1\times {\mathrm{8484913}}^1$

素因数の和:8484926

約数の個数: 20

約数和(自身を含む): 1578194004

約数和(自身を除く): 899400964

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 8484913, 16969826, 33939652, 42424565, 67879304, 84849130, 135758608, 169698260, 339396520, 678793040]

約数ペア:

[(1, 678793040), (2, 339396520), (4, 169698260), (5, 135758608), (8, 84849130), (10, 67879304), (16, 42424565), (20, 33939652), (40, 16969826), (80, 8484913)]