664152080

素因数分解:

$2^4\times 5^1\times {\mathrm{8301901}}^1$

素因数の和:8301914

約数の個数: 20

約数和(自身を含む): 1544153772

約数和(自身を除く): 880001692

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 8301901, 16603802, 33207604, 41509505, 66415208, 83019010, 132830416, 166038020, 332076040, 664152080]

約数ペア:

[(1, 664152080), (2, 332076040), (4, 166038020), (5, 132830416), (8, 83019010), (10, 66415208), (16, 41509505), (20, 33207604), (40, 16603802), (80, 8301901)]