198498640

素因数分解:

$2^4\times 5^1\times {\mathrm{2481233}}^1$

素因数の和:2481246

約数の個数: 20

約数和(自身を含む): 461509524

約数和(自身を除く): 263010884

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2481233, 4962466, 9924932, 12406165, 19849864, 24812330, 39699728, 49624660, 99249320, 198498640]

約数ペア:

[(1, 198498640), (2, 99249320), (4, 49624660), (5, 39699728), (8, 24812330), (10, 19849864), (16, 12406165), (20, 9924932), (40, 4962466), (80, 2481233)]