66438140

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{16693}}^1$

素因数の和:16901

約数の個数: 24

約数和(自身を含む): 140229600

約数和(自身を除く): 73791460

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980, 16693, 33386, 66772, 83465, 166930, 333860, 3321907, 6643814, 13287628, 16609535, 33219070, 66438140]

約数ペア:

[(1, 66438140), (2, 33219070), (4, 16609535), (5, 13287628), (10, 6643814), (20, 3321907), (199, 333860), (398, 166930), (796, 83465), (995, 66772), (1990, 33386), (3980, 16693)]