318797680

素因数分解:

$2^4\times 5^1\times {\mathrm{3984971}}^1$

素因数の和:3984984

約数の個数: 20

約数和(自身を含む): 741204792

約数和(自身を除く): 422407112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3984971, 7969942, 15939884, 19924855, 31879768, 39849710, 63759536, 79699420, 159398840, 318797680]

約数ペア:

[(1, 318797680), (2, 159398840), (4, 79699420), (5, 63759536), (8, 39849710), (10, 31879768), (16, 19924855), (20, 15939884), (40, 7969942), (80, 3984971)]